JP2619553B2 - Modular jack - Google Patents

Description

The present invention relates to a multipolar modular jack used as a connection terminal of a telephone or the like.

[Related Art] Conventionally, a multi-pole modular jack having eight or more contact springs has been provided. This type of multi-pole modular jack has a modular insert having a number of contact springs that contact the contacts of the modular plug, and a lead wire drawn from the modular insert is connected to an external through a terminal block. It is designed to be connected to electric wires.

[Problem to be Solved by the Invention] In such a conventional example, the terminal block side connected to the external electric wire has a so-called quick-connecting terminal structure including a terminal plate, a locking spring, and a release button. ing. for that reason,
There is a problem that the connection is made only for the single wire that can be connected only when the external wire is a single wire, and cannot be connected when the external wire is a stranded wire. Further, when the terminal structure of the terminal block is a screw type, it is possible to connect even a stranded wire, but there is a difficulty in workability.

The present invention has been provided in view of the above points,
It is an object of the present invention to provide a modular jack capable of easily connecting even when the external electric wire is a stranded wire.

Means for Solving the Problems According to the present invention, a modular jack main body has a size of three standardized wiring device modules, one modular block is provided, and leads are provided at both ends of a connection piece provided in a terminal block. The wire and the external line are press-fitted to form press-fitting slits for contacting and connecting to the connection pieces, respectively, and the terminal block is arranged in the same direction as the longitudinal direction of the modular jack.

[Operation] Thus, the lead wire of the modular block is press-fitted and connected to the press-fitting slit on one end side of the connection piece of the terminal block, and the external line is press-fitted and connected to the press-fitting slit on the other end side of the connection piece.
The external line can be connected even with stranded wires, and the terminal block is arranged in the same direction as the longitudinal direction of the modular jack,
Modular jack body is the size of three standardized wiring equipment modules, so that it can be mounted on the mounting frame for wiring equipment mounted on the wall etc., enabling embedded mounting suitable for three modules And

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. As shown in FIG. 1, a modular jack body 1 includes a case 2 forming an outer shell, a modular block 3 housed in the case 2, and a terminal block 4 electrically connected to the modular block 3. It is composed of The modular jack body 1 is formed of a synthetic resin in such a size that it can be attached to one of three large square mounting frames standardized by the JIS standard or the Japan Wiring Equipment Manufacturers Association standard. That is, in this embodiment, the size is such that one modular jack main body 1 can be mounted on the mounting frame.

The case 2 is composed of a body 5 and a cover 6 fitted on the opening surface of the body 5. As shown in FIG. 1, the cover 6 has two locking holes 7 formed on both sides of the body 5. Two flexible locking pieces 8 projecting from both sides are inserted and locked, respectively, and the cover 6 is mounted on the body 5. At one end of the bottom of the body 5, a square hole 9 for inserting and arranging the terminal block 4 is formed.

Two locking holes 10 are formed on both sides of the cover 6,
Also, two sets of a pair of locking pieces 11 protrude laterally. This locking hole 10 is to be mounted on a metal mounting frame,
The pair of locking pieces 11 are for mounting on a mounting frame made of synthetic resin. An insertion hole 12 into which a modular plug is inserted from the outside is formed at an end of the upper surface of the cover 6.

Modular block 3 to which modular plug is connected
As shown in FIG. 1, the frame comprises a middle frame 13, and a modular insert 14 arranged in the middle frame 13. The modular insert 14 is formed by integrally molding eight conductor wires made of a spring material. The eight conductor wires are disposed on one surface as contact springs 16 and the other surface is electrically connected to the contact springs 16. Are connected to the lead wire 17. The lead wire 17 is provided with an insulating coating. The contact spring 16 is
The plurality of contacts of the modular plug are individually and elastically contacted to obtain contact.

A middle frame 13 made of an insulating material penetrates up and down, and a guide hole 13 a is formed on an upper surface thereof in correspondence with the insertion hole 12 of the cover 6. The modular insert 1 is inserted into the guide hole 13a.
The fourth contact spring 16 is exposed as shown in FIG. Four projections 18 for positioning are formed around the middle frame 13, and projections 19 are provided between the projections 18.

A hook portion 20 that engages with the projection 19 of the middle frame 13 is formed on the thin body 5.
To fix the middle frame 13 to the body 5. The dowel 21 formed on the body 5 contacts the outer peripheral surface of the middle frame 13 so that the
13 is positioned. As shown in FIG. 1, a number of ribs 23 are arranged in a row on one side of the lower surface of the ceiling of the cover 6, and a space between the ribs 23 is a holding groove 24 for holding the lead wire 17.

The terminal block 4 includes a terminal body 26 and a cap 27 that covers the outside of the terminal body 26. The terminal body 26 is formed by integrally forming a holding frame 29 and conductive connection pieces 28 corresponding to the number of lead wires 17 of the modular insert 14 provided inside the holding frame 29. Although the terminal main body 26 and the body 5 are integrally formed at the same time, a configuration in which the terminal main body 26 is fitted into and fixed to the square hole 9 of the body 5 by inserting a distal end portion thereof may be used. As shown in FIG. 4, the connection piece 28 in the terminal main body 26 has an upper end protruding from the holding frame 29, and is split into two to form a pressure contact slit 30. Similarly, a pressure contact slit 31 is formed in the lower portion of the connection piece 28, and the pressure contact slit 31 is formed between the ribs 32 arranged in a row on the lower surface of the holding frame 29.
The configuration is such that 31 is positioned and the lower part of the connection piece 28 does not protrude from the rib 32. Terminal block 4
Are arranged in the same direction as the longitudinal direction of the modular jack body 1.

The lead wire 17 of the modular insert 14 is press-fitted into the press-fitting slit 30 at the upper part of the terminal body 26 while keeping the insulation coating, the insulation coating is peeled off, and the inner conductor is directly contacted and connected to the connection piece 28 so as to obtain electrical contact. ing. The same applies to the press-contact slit 31 below the connection piece 28.
, An external electric wire is press-fitted and contact-connected. Therefore, since it is a type that is press-fitted into the press-contact slits 30, 31, it is possible to easily connect not only a single wire but also a stranded wire. The flexible cap 27 made of an insulating material has a substantially U-shaped cross section, and can be detachably attached to the rib 32 of the holding frame 29. This cap 27 covers the holding frame 29 when no external electric wire is connected,
Further, the structure is such that it can be covered even when the electric wires are connected. That is, a substantially semicircular notch 33 is formed at the end of the side piece of the cap 27, and when the cap 27 is mounted on the holding frame 29, the notch 33 And the notch 33 serves as an escape for the external electric wire.

FIG. 2 shows an overall view of the modular jack body 1,
As shown, the terminal body 26 is integrally formed with the body 5 at the same time. Further, between the insertion hole 12 and the lower surface of the cover 6 and the upper surface of the guide hole 13a of the middle frame 13, door bodies 34 and 35 are slidably disposed. When the modular plug is not inserted, the guide holes 13a are closed by the doors 34 and 35 as shown in FIG. 2 (a). When the modular plug is inserted, the doors 34 and 35 are opened and shown in FIG. In such a state, the modular plug is inserted and the contact with the contact spring 16 is obtained.

The mounting frame 41 shown in FIG. 1 is for three large squares made of synthetic resin, and one modular jack body 1 of this embodiment can be mounted thereon. The mounting frame 41 is fixed to a switch box or the like embedded in a wall or the like, and mounting holes 42 are formed in upper and lower portions. Three sets of a pair of locking holes 43 are formed on one side of the mounting frame 41 so that the locking pieces 11 of the modular jack body 1 can be inserted and locked. Further, a flexible side piece 44 is integrally formed on the other side of the mounting frame 41, and a locking step 45 for locking the other side of the side piece 44 with the other locking piece 11 of the modular jack body 1 is provided. It is formed. When the modular jack main body 1 is mounted on the mounting frame 41, the locking pieces 11 on both sides can be inserted into the locking holes 43 and the locking step portions 45 and disregarded. By flexing the side piece 44 outward and disengaging the locking piece 11 from the locking step 45, the modular jack body 1 can be easily removed from the mounting frame 41.

[Effects of the Invention] As described above, according to the present invention, since the lead wire and the external line are press-fitted at both ends of the connection piece provided in the terminal block, the press-contact slits that are in contact with and connected to the connection piece are formed. The lead wire of the modular block is press-fitted and connected to the press-fitting slit on one end of the connection piece of the terminal block, and an external line is press-fitted and connected to the press-fitting slit on the other end of the connection piece so that the external line can be connected even with a stranded wire. Is what you can do. The modular jack body is formed into a size of three wiring device modules using a standardized size of three wiring device modules as a case, and the longitudinal direction of the terminal block is set to the longitudinal direction of the case. Since it was arranged in the same direction as the direction, 3
It can be mounted using the mounting frame for the wiring device of the individual module as it is, and when the modular jack is a multi-pole type, the number of contact springs and lead wires of the modular block increases, Therefore, even if the terminal block becomes large, the terminal block can be easily accommodated in a case formed so as to have a size corresponding to three modules, and it is possible to easily cope with a multi-pole modular jack.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of the entire embodiment of the present invention, FIGS. 2 (a) and 2 (b) are front and bottom views of main parts of the modular jack main body, and FIG. FIG. 4 is a front view showing an opened state, and FIG. 1 is a modular jack main body, 2 is a case, 3 is a modular block, 4 is a terminal block, 16 is a contact spring, 17 is a lead wire, 28 is a connecting piece, and 30, 31 are press-contact slits.

Claims (1)

(57) [Claims] 1. A case in which a modular plug is inserted from the outside, a contact spring contacting a contact of a modular plug housed in the case, and a modular block having a lead wire on a side opposite to the contact spring. And a terminal block for connecting the lead wire and the external line to form a modular jack main body, and wire the modular jack main body using a standardized size of three wiring module modules as a case. It is formed in the size of three instruments and one modular block is provided,
The lead wire and the external line are press-fitted at both ends of the connection piece provided on the terminal block to form press contact slits for contacting and connecting with the connection piece, respectively, and the longitudinal direction of the terminal block is the same as the longitudinal direction of the case. A modular jack characterized by being arranged in the direction.