JPH09167645A - Modular jack - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the need for an exclusive tool and remove restrictions on a work place, when an electric wire is terminated. SOLUTION: A modular jack is provided with a termination part 11 where a wire coming from the exterior is terminated, and the termination part 11 is equipped with a terminal fixing plate 4. Four terminal pieces 1 are disposed respectively on each of the right and left side surfaces of the terminal fixing plate 4. A slit 2 equipped with opposite edges 1a on its inner side is formed in an end of each of the terminal pieces 1. Further, first and second arms 5a, 5b turns around a shaft 7 of the terminal fixing plate 4 and cause the terminal pieces 1 to be fitted into recessed parts 6 so as to be able to fit thereinto or to part therefrom. After the first and second arms 5a, 5b are opened to the right and to the left respectively and a wire is located in the slit 2 of a predetermined terminal piece 1, the first and second arms 5a, 5b are closed to cause the wire to be pressed against the terminal piece 1, and an insulation coating is stripped off with the opposite edges 1a provided on the slit 2 while a core of the wire is brought into pressure contact with the terminal piece 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a modular jack used as an information wiring member for telephones and communications.

[0002]

2. Description of the Related Art Conventionally, modular jacks have been widely used for information wiring for telephones and communications. The modular jack has a connecting portion to which a modular plug in which electric wires are preliminarily wired is detachably connected, and a contact for contacting a contact terminal of the modular plug is arranged in the connecting portion. Further, the modular jack is provided with a terminal piece to which an electric wire is terminated from the outside, and the contact and the terminal piece are connected via a conductive member. Here, a slit is formed in the terminal piece, and an opposing blade is provided inside the slit. When terminating an electric wire from the outside to the terminal piece, press the coated electric wire into the slit of the terminal piece with a dedicated tool, and the insulating blade of the covered electric wire is peeled off by the opposing blade provided inside the slit. The core wire of is pressed against the slit of the terminal piece.

[0003]

When the electric wire is terminated from the outside in the modular jack having the above-mentioned structure, the electric wire is press-fitted into the slit formed in the terminal piece by using the special tool. There was a problem that required. Further, it is necessary to place the modular jack on a solid and stable base for the termination work, and there is a problem that the work place at the termination is limited.

The present invention has been made in view of the above problems, and the invention of claim 1 does not require a dedicated tool at the time of termination and can easily perform termination work anywhere regardless of the work place. Intended to provide modular jacks. It is an object of the invention of claim 2 to provide a modular jack in which the terminated electric wire is prevented from falling off.

An object of the invention of claim 3 is to provide a modular jack in which an external force applied to a terminated electric wire is reduced. It is an object of the inventions of claims 4 to 6 to provide a modular jack that improves workability when terminating a twisted pair cable and reduces the near-end crosstalk attenuation amount.

[0006]

In order to achieve the above-mentioned object, the present invention according to claim 1 is directed to a connecting portion to which a modular plug is detachably connected, and a termination for terminating an electric wire from the outside. With a housing, a contact arranged in the connecting portion to contact the contact terminal of the modular plug, a slit is formed at the tip connected to the contact through a conductive member, and an opposing blade is provided inside the slit. Terminal piece, a terminal fixing plate provided on the left and right side surfaces with the slit facing outward and a plurality of terminal pieces provided at the end portion, and a recess for mating with the terminal piece in a detachable manner. Since it is provided with an arm that is rotatably installed on the terminal fixing plate in the same plane as the terminal piece, by arranging the electric wire at the position of the slit of the predetermined terminal piece and sandwiching the arm from both sides, Wire to terminal strip It is possible to end.

According to a second aspect of the present invention, in the first aspect of the present invention, two arms are provided, one end of which is rotatably installed at a rotating end of one arm and the other end of which has a J-shaped engagement. Since the fastener having the stopper is formed and the convex portion formed at the pivotal end of the other arm and releasably engaged with the engaging portion, the fastener is engaged with the convex portion. By doing so, the electric wire terminated on the terminal piece can be held.

According to a third aspect of the present invention, in the first aspect of the present invention, a substantially inverted U that holds an electric wire that is terminated by a termination portion from the outside.
Since the character-shaped cable fixing portion is provided at the terminating portion, the electric wire can be inserted into the cable fixing portion and held. According to a fourth aspect of the present invention, in the first aspect of the invention, the first and second contacts from one end of the connecting portion and the first and second contacts from one end of the terminal fixing plate are disposed on the first side surface of the terminal fixing plate. The second terminal piece is connected to the second terminal piece through a conductive member, and the seventh and eighth contacts from one end of the connecting portion are arranged on the second side surface of the terminal fixing plate, and the second contact from the one end of the terminal fixing plate. The first terminal piece is connected via a conductive member, and the third and sixth contacts from one end of the connecting portion and the terminal pieces arranged on the first and second side surfaces are connected via a conductive member. Since the 4th and 5th contacts from one end of the connecting portion and the 4th and 1st side terminal pieces from the one end of the terminal fixing plate are connected via the conductive member, respectively. Terminate 4 pairs of twisted pair cable to modular jack , It is possible to attach each pair of twisted pair cables in vertically or horizontally adjacent terminal pieces.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the conductive members connected to the first and second contacts from one end of the connecting portion intersect with each other in a three-dimensional manner, and the seventh and the seventh portions from one end of the connecting portion. Since the conductive members connected to the eighth contact cross each other, a specific pair of twisted pair cables terminated at the termination can be crossed within the housing.

According to a sixth aspect of the present invention, in the invention of the fourth aspect, the terminal fixing plate is formed of a printed circuit board, and conductive members connected to the third and sixth contacts from one end of the connecting portion are formed on the printed circuit board. Since the conductive members connected to the fourth and fifth contacts from one end of the connection portion intersect each other through the through hole while intersecting each other through the formed through hole, they are terminated at the termination portion. Specific pairs of twisted pair cables can be crossed within a printed circuit board.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) The modular jack of this embodiment is shown in FIG.
As shown in FIG. 6, a connection portion 8 provided with a plug insertion recess 9 to which an 8-pole modular plug 18 is detachably connected,
A termination portion 11 to which an electric wire (not shown) is terminated from the outside,
The connecting portion 8 and the terminating portion 11 are provided with a housing 13 integrally formed of an insulating synthetic resin, and the connecting portion 8 has a contact terminal of a modular plug 18 (not shown).
A contact 10 for contacting with is provided. Also,
This modular jack, as shown in FIGS. 1 to 3,
The terminal piece 1 in which the slit 2 is formed and the facing blade 1a is provided inside the slit 2, the conductive member 12 connecting the terminal piece 1 and the contact 10, and the connecting portion 8 and the terminating portion 11 are orthogonal to each other. And four terminal pieces 1 provided on both left and right sides of the terminal fixing plate 4 arranged in a row at regular intervals with the slit 2 facing outward, and the terminal piece 1 formed of an insulator.
To attach the terminal fixing plate 4 to the terminal fixing plate 4 and a comb-shaped mounting plate 3 disposed on the terminal fixing plate 4, and a shaft 7 provided on the terminal fixing plate 4 as a center, and can rotate in the same plane as the terminal piece 1. The first and second parts mounted on the terminal fixing plate 4 so as to rotate in the direction of
Arms 5a, 5b and the first and second arms 5a, 5
4 provided on each side of the terminal fixing plate 4
It is provided with individual terminal pieces 1 and fitting recesses 6 which are fitted and detachable. In this modular jack, four terminal pieces 1 are arranged on each of the left and right side surfaces of the terminal fixing plate 4, and a total of eight terminal pieces 1 are arranged, so that four pairs of twisted pair cables can be terminated to the terminal piece 1.

Next, the procedure for terminating the twisted pair cable on the modular jack will be described with reference to FIGS. 4 and 5. First, the first arm 5a is rotated clockwise and the second arm 5b is rotated counterclockwise to open the first and second arms 5a and 5b to the left and right, and the terminal piece 1 and the first and fifth arms are opened. A space for inserting each wire of a twisted pair cable (not shown) is secured between the two arms 5a and 5b. The twist of each pair of the four pairs of twisted pair cables is loosened, and the eight electric wires of the twisted pair cable are inserted into the openings of the predetermined slits 2. Next, the first arm 5a is rotated counterclockwise and the second arm 5b is rotated clockwise respectively to close the first and second arms 5a and 5b, and to the left and right side surfaces of the terminal fixing plate 4. The four arranged terminal pieces 1 and the fitting recess 6 are fitted together. Further, the first and second arms 5a and 5b are rotated so that the electric wires are pressed against the slit 2 by the end faces of the first and second arms 5a and 5b. Here, as shown in FIG.
Since the width of the slit 2 provided in the terminal piece 1 is gradually narrowed from the opening to the bottom of the slit 2,
And slit the wire 2 at the end faces of the second arms 5a and 5b.
When the wire is pressed against, the insulating coating of the wire is peeled off by the opposing blade 1a formed inside the slit 2, and when the wire is pressed against the slit 2, the core wire of the wire is pressed against the slit 2.

Further, in this modular jack, as shown in FIG. 7, each of eight terminal pieces (not shown) and a contact (not shown) are connected by eight conductive members 12, respectively. On the right side surface of the terminal fixing plate 4, four conductive members 12 connected to the fourth contact from the right end of the connecting portion 8 are wired in order from the lower end of the terminal fixing plate 4. On the left side surface of 4, the conductive member 12 connected to the fourth contact from the left end of the connection portion 8 is wired in order from the lower end of the terminal fixing plate 4. Here, each pair 20 of four pairs of twisted pair cables is arranged so as to be terminated to an adjacent terminal piece, for example, EIA / TIA 568A T56.
When the wiring color assignment specified in 8B is used, the right side surface of the terminal fixing plate 4 is a brown wire, a brown-white wire, and
The green wire and the blue-white wire are terminated. On the left side surface of the terminal fixing plate 4, the orange-white wire, the orange wire, the green-white wire, and the blue wire are terminated in order from the lower end. There is. In this way, since each pair 20 of the twisted pair cable is terminated to the adjacent terminal piece without the eight conductive members 12 crossing each other, it is possible to untwist each pair 20 of the twisted pair cable at the time of termination. The length can be shortened, the workability at the time of termination can be improved, and the noise resistance performance can be improved.

By the way, the housing 13 including the connecting portion 8 and the terminating portion 11 is, for example, MID (Molded Intercon).
nection device) method, the conductive member 12 is molded and then resin-plated. (Second Embodiment) This modular jack is shown in FIG.
As shown in (b), one end is rotatably attached to the upper surface of the first arm 5a, and the other end is formed with a J-shaped engaging portion 21 and the second arm 5b. The convex portion 15 on which the engaging portion 21 is detachably engaged with the upper surface of the
And the fastener 14 rotates in a plane parallel to the upper surface of the first arm 5a, and the first and second arms 5a, 5
With b closed, the locking portion 21 and the convex portion 15 are locked so that they can be locked and released.

After the eight electric wires (not shown) of the twisted pair cable are respectively terminated to the terminal piece 1 by the procedure described in the first embodiment, the first and second arms 5a and 5b are closed. , The fastener 14 is rotated to lock the engaging portion 21 and the convex portion 15
When and are locked, the positions of the first and second arms 5a and 5b are fixed. At this time, the first and second arms 5
Since a and 5b and the terminal piece 1 hold the electric wire, it is possible to prevent the electric wire from falling off the terminal piece 1 due to an external force applied to the twisted pair cable.

The fastener 14, the convex portion 15 and the locking portion 21
Since the configuration of the modular jack other than the above is the same as that of the first embodiment, the description thereof will be omitted. (Embodiment 3) The modular jack of this embodiment is shown in FIG.
As shown in FIG. 1, a cable fixing portion 1 having a substantially inverted U shape, which is provided on the front side of the terminal fixing plate 4 on the surface of the terminating portion 11 and holds a twisted pair cable (not shown) terminated by the terminal piece 1.
6a and the gap 2 between the cable fixing portion 16a and the terminating portion 11
The cable fixing convex portion 16 provided on the surface of the terminating portion 11 in order to prevent the twisted pair cable from falling off
b.

Here, the width of the gap 22 is wider than the outer diameter of the twisted pair cable, and after the twisted pair cable is terminated to the terminal piece 1 by the procedure described in the first embodiment,
The twisted pair cable is passed through the gap 22, and the cable fixing portion 16a and the cable fixing convex portion 16b hold the twisted pair cable. Therefore, the external force applied to the twisted pair cable can be reduced, and accidents such as breakage and dropout of the twisted pair cable can be prevented.

Since the structure of the modular jack other than the cable fixing portion 16a and the cable fixing convex portion 16b is the same as that of the first embodiment, its explanation is omitted. (Embodiment 4) The modular jack of this embodiment is shown in FIG.
0 and FIG. 11, eight terminal pieces (not shown) and contacts (not shown) each provided with eight conductive members 12 are provided.
Are connected to each other. Here, the recessed portion 24 is provided in the termination portion 11 below the first and second conductive members 12a and 12b connected to the first and second contacts from the right end of the connection portion 8, respectively. The first conductive member 12 connected to the first contact from the right end of the
A is wired in the air above the recess 24 by using the three-dimensional wiring technique and is connected to the second terminal piece from the lower end of the right side surface of the terminal fixing plate 4. On the other hand, the second conductive member 12 b connected to the second contact from the right end of the connecting portion 8 has the recess 24.
Of the first conductive member 12a, and is connected to the first terminal piece from the lower end of the right side surface of the terminal fixing plate 4. Similarly, the conductive members (not shown) connected to the seventh and eighth contacts from the right end of the connecting portion 8 are also three-dimensionally crossed with each other using a recess (not shown),
It is connected to the first and second terminal pieces 1 from the lower end of the left side surface of the terminal fixing plate 4, respectively.

Here, each pair of twisted pair cables 20 is provided on the first and second terminal pieces from the lower end of the right side surface of the terminal fixing plate 4 and on the first and second terminal pieces from the lower end of the left side surface.
As described above, by crossing the conductive members in the housing as described above, the near-end crosstalk attenuation amount generated in the twisted pair cable can be reduced. by the way,
The third and sixth contacts from the right end of the connecting portion 8, 4
The conductive members 12 respectively arranged at the third and fifth contacts may be three-dimensionally crossed, or the conductive members 12 may be three-dimensionally crossed by a method other than forming the recess 24.

Further, for example, when the wiring color assignment specified by EIA / TIA 568A T568B is used, the right side surface of the terminal fixing plate 4 is a brown-white electric wire, a brown electric wire, and a green electric wire in order from the lower end. , The blue-white wire is terminated, and on the left side surface of the terminal fixing plate 4, orange wire, orange-white wire,
The green-white wire and the blue wire are terminated. The configuration of the modular jack other than the first and second conductive members 12a and 12b and the recess 24 is the same as that of the first embodiment.
The description is omitted. (Embodiment 5) The modular jack of this embodiment is shown in FIG.
As shown in FIGS. 2 and 13, a terminal fixing plate made of a printed board 23 is used, and the conductive members 12 are crossed through through holes formed through the printed board 23. That is, the third conductive member 12c connected to the third terminal piece (not shown) from the lower end of the right side of the printed board 23 and the fourth conductive member 12c connected to the third terminal piece from the lower end of the left side of the printed board 23. The conductive member 12d intersects with the conductive member 12d twice with the printed circuit board 23 interposed therebetween via the first and second through holes 17a and 17b, respectively. Similarly, from the lower end on the right side of the printed circuit board 23, 4
The fifth conductive member 12e connected to the fourth terminal piece and the sixth conductive member 12f connected to the fourth terminal piece from the lower end of the left side surface of the printed circuit board 23 are the third and fourth through holes, respectively. The printed circuit board 23 is sandwiched between the holes 17c and 17d so that they intersect each other twice. Here, each pair 20 of twisted pair cables is terminated to the third terminal piece from the lower end and the fourth terminal piece from the lower end on the left and right side surfaces of the printed circuit board 23, respectively. By crossing the conductive members inside through the through holes, the near-end crosstalk attenuation amount can be reduced.

Here, the third and fourth conductive members 12c,
The third conductive member 12 is provided so as not to short-circuit with each other.
c is arranged so as to bypass the second through hole 17b connected to the fourth conductive member 12d, and the fourth conductive member 12d is connected to the third conductive member 12c. It is arranged so as to bypass the through hole 17a. Similarly, the fifth conductive member 12e is arranged so as to bypass the fourth through hole 17d connected to the sixth conductive member 12f so that the fifth and sixth conductive members 12e and 12f are not short-circuited with each other. The sixth conductive member 12f is installed in the fifth
Through hole 17 connected to the conductive member 12e of
It is arranged to bypass c.

By the way, the conductive member 12 connected to the first and second terminal pieces from the lower end of the right side of the printed circuit board 23 and the first and second terminal pieces from the lower end of the left side of the printed circuit board 23 are respectively provided with through holes. It goes without saying that they may intersect with each other. Incidentally, the third to sixth conductive members 12c to 12f and the first to fourth through holes 17a.
The configuration of the modular jack other than 17d and the printed circuit board 23 is the same as that of the first embodiment, and the description thereof is omitted.

[0023]

According to the invention of claim 1, a housing having a connecting portion to which the modular plug is detachably connected and a terminating portion to which an electric wire is terminated from the outside, and a modular plug arranged in the connecting portion. A contact that comes into contact with the contact terminal, a terminal piece that is connected to the contact through a conductive member and that has a slit formed at the tip and an opposing blade inside the slit, and a plurality of terminal pieces that are provided at the terminating end. The terminal fixing plate is provided on both the left and right side surfaces with the slit facing outward, and the recess for fitting and detaching the terminal piece is provided so that the terminal fixing plate can be rotated in the same plane as the terminal piece. It is equipped with an installed arm, and by arranging the wire in the slit of the terminal piece and sandwiching the arm from both sides, the wire can be terminated to the terminal piece. No unstable place There is an effect that also facilitates the termination work.

According to a second aspect of the present invention, there are provided two arms, one end of which is rotatably installed at a rotary end of one arm and the other end of which is provided with a J-shaped engaging portion. And a convex portion formed at the pivotal end of the other arm so as to be releasably engaged with the locking portion. By locking the fastener and the convex portion, the terminating portion is formed. It is possible to hold the terminated electric wire and to prevent the electric wire from falling off.

According to a third aspect of the present invention, the cable fixing portion is provided with a substantially U-shaped cable fixing portion for holding an electric wire terminated from the outside at the terminating portion, and the cable fixing portion is terminated. Since the terminated electric wire can be inserted, there is an effect that an external force applied to the electric wire terminated at the terminating portion can be reduced and an accident such as breakage or dropping of the electric wire can be prevented. According to a fourth aspect of the present invention, the first and second contacts from one end of the connecting portion and the first and second terminal pieces from one end of the terminal fixing plate disposed on the first side surface of the terminal fixing plate are electrically conductive. And 7th and 8th contacts from one end of the connecting portion, and 2nd and 1st terminal pieces from one end of the terminal fixing plate, which are arranged on the second side surface of the terminal fixing plate. The conductive parts are connected to each other, and the third and sixth contacts from one end of the connection part and the terminal pieces arranged on the first and second side faces are connected to each other via the conductive members to form the connection part. The 4th and 5th contacts from one end of the terminal are connected to the 4th and 1st and 2nd side terminal pieces from the one end of the terminal fixing plate through conductive members, respectively, and four twisted pair cables are modular. When terminating in a jack, use the twisted pair cable It is possible to termination vertically or horizontally adjacent terminal piece pair has the effect of terminating work becomes easy. In addition, since the length of unraveling each pair of twisted pair cables can be shortened, there is an effect that the near-end crosstalk attenuation amount can be suppressed and the noise resistance performance is improved.

According to a fifth aspect of the present invention, the conductive members connected to the first and second contacts from one end of the connecting portion intersect with each other in a three-dimensional manner, and are connected to the seventh and eighth contacts from one end of the connecting portion. The conductive members intersect each other in a three-dimensional manner, and a specific pair of twisted pair cables terminated at the termination can be intersected in the housing, so that the near-end crosstalk attenuation amount can be suppressed and noise resistance can be reduced. This has the effect of improving performance.

According to a sixth aspect of the present invention, the terminal fixing plate is formed of a printed circuit board, and the conductive members connected to the third and sixth contacts from one end of the connecting portion are provided through through holes formed in the printed circuit board. Conductive members that intersect each other and are connected to the fourth and fifth contacts from one end of the connection portion intersect each other through a through hole, and connect a specific pair of twisted pair cables terminated at the termination part. Since they can be crossed in the printed circuit board, the near-end crosstalk attenuation amount can be suppressed, and the noise resistance performance is improved.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a modular jack according to a first embodiment.

FIG. 2 (a) is a side view of the above-mentioned terminal fixing plate with a part thereof omitted. (B) It is a front view which can omit a part same as the above.

FIG. 3A is a left side view of the same arm. (B) It is a front view same as the above. (C) It is a right view of the above.

FIG. 4 is a partially omitted external perspective view showing a rotating state of the above arm.

FIG. 5 is a partially omitted state diagram showing a termination state of the electric wire.

FIG. 6 is a side view of the above modular jack.

FIG. 7 is a cutaway perspective view of the modular jack of the same.

FIG. 8A is an external perspective view showing the modular jack according to the second embodiment. (B) It is a top view which can omit a part same as the above.

FIG. 9 is an external perspective view showing a modular jack according to a third embodiment.

FIG. 10 is a cutaway perspective view showing a modular jack according to a fourth embodiment.

FIG. 11 (a) is a partially omitted perspective view of the above. (B) It is a side view which can omit a part same as the above.

FIG. 12 is a cutaway perspective view showing a modular jack according to a fifth embodiment.

FIG. 13 is a side view showing the above-mentioned terminal fixing plate.

[Explanation of symbols]

 1 Terminal Piece 1a Opposed Blade 2 Slit 4 Terminal Fixing Plate 5a First Arm 5b Second Arm 6 Fitting Recess 7 Shaft 11 Termination

Claims (6)

[Claims] 1. A housing having a connecting portion to which a modular plug is detachably connected and an terminating portion to which an electric wire is terminated from the outside, and a contact terminal of the modular plug which is disposed in the connecting portion. A contact, a terminal piece provided with a facing blade inside the slit and connected to the contact through a conductive member to form a slit at the tip, and a plurality of the terminal pieces provided at the terminal end. The terminal fixing plate is provided on both left and right side surfaces with the slit facing outward, and a recess for fittingly fitting and disengaging the terminal piece is provided, and the terminal piece is rotatable in the same plane as the terminal piece. A modular jack comprising an arm mounted on a fixed plate. 2. A fastener provided with two arms, one end of which is rotatably installed on a rotating end of one of the arms, and the other end of which is formed with a J-shaped engaging portion. 2. The modular jack according to claim 1, wherein the other end of the arm is provided with a protruding portion formed at the pivotal end of the arm and releasably engaged with the engaging portion. 3. The modular device according to claim 1, wherein a substantially inverted U-shaped cable fixing portion for holding an electric wire terminated to the termination portion from the outside is provided at the termination portion. Jack. 4. The first and second contacts from one end of the connecting portion, and the first and second terminal pieces from one end of the terminal fixing plate disposed on the first side surface of the terminal fixing plate. Are respectively connected via the conductive member, and the 7th and 8th contacts from one end of the connection portion and the 2nd contact from one end of the terminal fixing plate are disposed on the second side surface of the terminal fixing plate. And the first terminal piece are respectively connected via the conductive member, and the third and sixth contacts from one end of the connecting portion and the terminals provided on the first and second side surfaces are connected. And a fourth contact from one end of the connecting portion and a fourth contact from the one end of the terminal fixing plate.
2. The modular jack according to claim 1, wherein the terminal pieces on the second side surface are connected to each other via the conductive member. 5. The conductive members connected to the first and second contacts from one end of the connecting portion intersect with each other in a three-dimensional manner, and at the seventh and eighth positions from one end of the connecting portion.
The modular jack according to claim 4, wherein the conductive members connected to the third contact cross over each other. 6. The terminal fixing plate is formed of a printed circuit board, and the conductive members connected to the third and sixth contacts from one end of the connection portion are provided through through holes formed in the printed circuit board. The modular jack according to claim 4, wherein the conductive members that intersect with each other and are connected to the fourth and fifth contacts from one end of the connection portion intersect with each other through the through hole. .