JPH0724781Y2 - Terminal block for wiring board - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of use] The present invention relates to a terminal block used for connecting a central line and a premises line or between premises lines in a wiring board for telephone exchange.

"Conventional technology and its problems" Conventionally, the main distribution board (hereinafter referred to as MDF) used for the switching center and the private branch exchange equipment is an ammunition for a subscriber line test, a protector for protecting from a lightning surge intrusion, and Avoid the concentration of the same equipment in the exchange system of the same bundle of cables outside the office, and when installing, abolishing, or relocating subscribers, the jumper wiring for accommodating the line and equipment in the office is an ammunition rack or ammunition, respectively.
It was independent as a wiring board rack and protector rack, and these were connected by a multi-core station cable.

In this way, the conventional MDF has a large installation area because the racks are independent of each other, and a large installation area because they are independent of each other. The installation required a great deal of cost and time.

Further, in recent years, there has been a strong demand for a reduction in the installation area of the telegraph device as the telegraph device is automated and unmanned.

One way to achieve this is to densify the main wiring board used when connecting the office line and the premises line, and to allow the main wiring board to be handled only on the front side, and the rear side on the wall. It is desired to reduce the installation area of the main wiring board by attaching it.

The same applies to an intermediate terminal board (IDF) for connecting internal wiring.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a terminal block that can be easily attached to a wiring board rack and can connect core wires at high density.

[Means for Solving the Problems] As means for achieving the above object, the terminal block for a wiring board according to the present invention is a box-shaped terminal block body having a plurality of core wire connecting terminals and an ammunition. A terminal block provided with a fixing member for fixing the terminal block body inserted into a mounting hole of a mounting plate in a predetermined insertion direction to the mounting plate, wherein the core wire connecting terminal is A plurality of the above-mentioned ammunition are provided side by side on the front side of the insertion direction and a rear side of the insertion direction, and a plurality of the above-mentioned ammunition are provided side by side on one of the front side and the rear side of the insertion direction of the terminal block body. , The above-mentioned ammunition has a built-in ammunition contact in which a part of two metal plates are in contact, and in the above-mentioned terminal block, a metal fitting for connection arranged on the front side in the insertion direction is formed at one end, and the other end is One metal plate of the bullet contact extending to the rear side in the insertion direction Became the first
And a second conductor in which a metal fitting for connection is formed at one end on the rear surface side in the insertion direction and the other end is the other metal plate of the bullet contact, and the first conductor is provided. And a second conductor are connected at the ammunition contact, the ammunition contact maintains connection between the conductors when a plate member made of a conductor is inserted, and a plate member made of an insulator. In the case of inserting, the conductors are disconnected from each other, and the core wire connecting terminal connects the conductor wire of the core wire and the metal fitting for connection.

[Operation] In the terminal block for the wiring board according to the present invention, a plurality of core wire connecting terminals are arranged side by side on the insertion block front side and the insertion direction rear side, respectively, and the ammunition is installed on the terminal block. By arranging a plurality of side-by-side arrangements on one of the front side and the rear side in the insertion direction of the main body, this terminal block is inserted in the mounting hole in the predetermined insertion direction,
With the fixing member fixed to the mounting plate, the core wire connecting terminals are distributed on both sides of the mounting plate, and the ammunition is arranged in parallel on one side of the mounting plate. And connect the core wire of the local line or the premises line to the plurality of core wire connection terminals distributed on one surface side of the mounting plate, and to the plurality of core wire connection terminals distributed on the other surface side. By connecting a jumper wire and connecting this jumper wire to the terminal of another terminal block, it is possible to make a jumper wire connection between multiple curves and the premises line on either the front or back side of the mounting plate. it can.

[Embodiment] FIGS. 1 to 3 are views showing an embodiment of the present invention, in which reference numeral 1 is a terminal block.

This terminal block 1 has a box-shaped terminal block main body 4 having a plurality of core wire connecting terminals 2 ... And an ammunition 3 ..., and the terminal block main body 4 is inserted into a mounting hole 6 of a mounting plate 5 in a predetermined manner. Terminal block body 4 in the direction (direction indicated by the arrow in the drawing of FIG. 1)
A plurality of stoppers 7 are formed to project at a position corresponding to the insertion end position when inserting the terminal 7, and the front end 8 is fixed to the outer surface of the terminal block body 4 in front of the stoppers 7 in the insertion direction. 4, a plurality of plate-shaped fixing claws 10 formed so that the rear end 9 side of which is separated from the outer surface of 4 is close to the stopper 7 are arranged side by side.

A plurality of the core wire connecting terminals 2 are arranged side by side on the front side in the insertion direction and on the rear side in the insertion direction of the terminal block body 4. A plurality of core wire connecting terminals 2 arranged side by side on each side ...
Are arranged in two rows in a staggered pattern. In these core wire connecting terminals 2, the core wire 11 whose conductor is coated with a synthetic resin is pressed against the connecting metal fitting 12 to cut the coating of the core wire 11 so that the conductor wire and the connecting metal fitting 12 are connected. U-contact is used. The core wire connection terminal 2 may be a terminal of a type in which a conductor is connected to the connection fitting 12 by soldering, in addition to the U contact.

A plurality of ammunition units 3 are arranged side by side on the rear surface side of the terminal block body 4 in the insertion direction along the direction in which the core wire connecting terminals 2 are arranged in parallel. To these ammunition 3, two metal plates are bent, and a part of each metal plate comes into contact with the ammunition contact 13 ...
Is built in. A plate-shaped member for signal extraction is inserted into these ammunition contacts 13 ..., and signal monitoring of the wiring between each core wire connecting terminal 2 and the core wire 11 is performed. Further, these ammunition 3 ... Are arranged in parallel so that one ammunition contact 13 corresponds to one core wire connecting terminal 2.

In this embodiment, for example, when monitoring the signals of the two core wire connecting terminals 2, 2 connecting the pair of core wires 11, 11 forming a pair on the plus side and the minus side, the above-mentioned plate is used. In order to prevent the problem that the strip-shaped member is inserted into the wrong position, the plate-shaped member insertion port 14 of each ammunition 3 is divided into two adjacent ammunition contact 13, 13. .

Next, referring to FIG. 2, a connection state between the core wire connecting terminal 2 and the ammunition 3 in the terminal block 1 according to this example will be described. As shown in this figure, in the terminal block 1, a metal fitting 12a is formed at one end on the front side in the insertion direction, and the other end extends toward the rear side in the insertion direction. The first conductor 16 that has become 15a and the second conductor 17 that has the connection metal fitting 12b arranged at the rear side in the insertion direction at one end and the other metal plate 15b of the bullet contact 13 at the other end 17 And are provided. The first conductor 16 and the second conductor 17 are connected to each other at the bullet contact 13, so that the connection fitting 12a on the front side in the insertion direction and the connection fitting 12b on the rear side in the insertion direction are connected. It has become so. When inserting a plate-shaped member made of a conductor into the bullet contact 13, the connection between the conductors 16 and 17 is maintained, while a plate-shaped member made of an insulator is inserted in the bullet contact 13. In case of each conductor 1
The connection between 6 and 17 is broken.

The terminal block body 4 is a box-shaped body made of synthetic resin, and the first conductor 16 and the second conductor 17 are inside thereof.
A guide is formed for arranging and fixing a plurality of pieces. Further, the terminal holder portion 18 into which the fitting 12 for connection is inserted and fixed is provided on the front surface side and the rear surface side of the terminal block body 4.
... are juxtaposed. Furthermore, a plurality of core wire guides 19 are formed on both sides of the terminal holder portions 18 on the front side and the rear side in the insertion direction. Then, on the pair of core wire guides 19, 19 on both sides of the terminal holder portion 18, the terminal block body 4
By inserting the core wire 11 along the thickness direction of the core wire, the two positions of the core wire 11 are held by the core wire guides 19, 19 and fixed to the terminal holder portion 18 between these core wire guides 19, 19. The connecting fitting 12 and the conductor of the core wire 11 are connected to each other.

It is preferable that the terminal block body 4 has an assembled structure. For example, in the terminal block body 4 shown in FIG. 1, each conductor is provided in a conductor guide formed in the central member 4a.
After inserting 16 and 17, the core block guide 19 and the side members 4b and 4c on which the terminal holder 18 is formed are joined to assemble the terminal block body 4.
Further, a plurality of locking projections 20 ... Are formed at both the front and rear ends of the central member 4a in the insertion direction, while the locking projections are provided at the ends of the side members 4b and 4c. A plurality of locking pieces 21 that fit into the parts 20 are formed.

This terminal block 1 has a mounting hole 6 formed in a mounting plate 5.
By inserting it in a predetermined insertion direction, sandwiching the mounting plate 5 between the stopper 7 and the fixing claw 10 as shown in FIG. 3, and inserting and fixing the terminal block 1 in the mounting plate 5 to the center thereof, The core wire connecting terminals 2 ... Are distributed to both the front and back sides of the mounting plate 5, and the ammunition 3 is provided in parallel on the rear surface side in the insertion direction. Terminal block 1 mounted in this way
The core wires 11 of the central line or the premises line are connected to the core wire connecting terminals 2 distributed on one surface side of the mounting plate 5 of
By connecting the core wires 11 serving as jumper wires to the core wire connecting terminals 2 distributed on the other surface side, a plurality of local wires and premises wires can be formed on one of the front and back surfaces of the mounting plate 5. Jumper wire connection can be made.

Then, a plurality of the terminal blocks 1 are attached to the mounting plate 5, and for example, the core wire connecting terminals 2 on the back surface side of the mounting plate 5,
MDF (or IDF) by connecting the core wires of the central line and the private branch line, connecting the core wire connecting terminals 2 ... on the surface of the mounting plate 5 with jumper wires, and connecting the central line and the private branch line to be connected. Make up.

Further, in this terminal block 1, since the ammunition units 3 are arranged side by side on the rear surface side in the insertion direction, when the terminal block 1 is inserted and fixed to the mounting plate 5, the ammunition units 3 are arranged on the front surface side of the mounting plate 5. ,
The signal can be monitored by the ammunition 3 ... From the surface side of the mounting plate 5.

In the terminal block 1 according to this embodiment, a plurality of core wire connecting terminals 2 ... Are distributed to both front and back surfaces of the mounting plate 5 while the insertion block 3 is inserted and fixed, and the ammunition 3 ... Since it is arranged on the side, a plurality of terminal blocks 1 are attached to the mounting plate 5, and further, the mounting plate 5 is mounted on the frame to mount the MDF.
, The core wire of the central wire and the private wire is connected to the core wire connecting terminals 2 on one surface side of the mounting plate 5,
By connecting a jumper wire to the core wire connecting terminals 2 on the other side of the mounting plate 5 and connecting it to the premises line with the station line to be connected, a jumper is provided on the front side of the MDF mounting plate. Since the line connection and the signal monitoring by the ammunition 3 can be performed, the rear surface side of the MDF can be attached to the wall to reduce the installation area of the MDF.

Further, since the wiring with the jumper wire can be performed only on one surface side of the mounting plate 5, it is possible to prevent the congestion between the jumper wire, the premises line and the local line.

[Advantage of the Invention] As described above, the terminal block for a wiring board according to the present invention has a plurality of core wire connecting terminals distributed on both front and back sides of the mounting plate in a state of being inserted and fixed in the mounting plate. Since the ammunition is installed on the rear side in the insertion direction, if multiple terminal blocks are attached to the mounting plate and then the mounting plate is attached to the gantry to form a wiring board such as MDF or IDF, one of the mounting plates is used. Connect the core wire of the central wire and the branch wire to the core wire connection terminal on one surface side, connect the jumper wire to the core wire connection terminal on the other surface side of the mounting plate, and Since it can be connected to the premises line, and the front side of the mounting plate of the wiring board can be connected with the jumper wire and the signal can be monitored with an ammunition ... The installation area can be reduced.

Moreover, since wiring by the jumper wire can be performed only on one surface side of the mounting plate, it is possible to prevent congestion between the jumper wire, the private line, and the local line.

[Brief description of drawings]

1 to 3 are views showing an embodiment of the present invention. FIG. 1 is a perspective view of a terminal block, FIG. 2 is a side sectional view of the same, and FIG. 3 is a mounting state of the terminal block. It is a side view which shows. 1 ...... Terminal block 2 ...... Core wire connection terminal 3 ...... Ammunition 4 ...... Terminal block body 5 ...... Mounting plate 6 ...... Mounting hole 10 ...... Fixing claw (fixing member) 11 ...... Core wire.

Front page continued (72) Inventor Yasuyuki Sugawara 1440 Rokuzaki, Sakura City, Chiba Fujikura Electric Co., Ltd. Sakura Factory (56) References JP 57-34678 (JP, A) JP 58-73969 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. A box-shaped terminal block body provided with a plurality of core wire connecting terminals and an ammunition, the terminal block body being inserted into a mounting hole of a mounting plate in a predetermined insertion direction as a mounting plate. A terminal block provided with a fixing member for fixing, wherein a plurality of the core wire connecting terminals are arranged side by side on the insertion direction front side and the insertion direction rear side of the terminal block body, respectively, and the ammunition is provided, A plurality of terminal blocks are arranged side by side on one of the front side and the rear side in the insertion direction of the terminal block body, and the ammunition has the ammunition contact with a part of two metal plates contacting each other. In the terminal block, one end is formed with a connecting fitting arranged on the front side in the insertion direction, and the other end is a first metal plate of one of the ammunition contacts extending to the rear side in the insertion direction; A metal fitting for connection is formed on the rear side in the insertion direction, and the other end is A second conductor serving as the other metal plate is provided, and the first conductor and the second conductor are connected at the bullet contact, and the bullet contact is a plate-shaped member made of a conductor. When connecting the conductors, the connection between the conductors is maintained, and when inserting a plate-shaped member made of an insulator, the connection between the conductors is cut off. A terminal block for a wiring board, characterized in that the terminal block and the metal fitting for connection are connected to each other.