JPH0945409A - Modular connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a modular connector capable of improving connecting work efficiency by carrying out connecting work without using any special jigs or tools. SOLUTION: A press fitting type terminal piece 22 to which a twist pair line TP is connected is erected in a terminal base 12 provided in a housing 1. In the housing 1, the shaft pin 3a of a lever 3 freely rotated between a position covering the terminal base 12 and a position opening this base is pivotally supported in a hook 12a. By rotating the lever 3 so as to cover the terminal piece 22, the lead lines L1 to L8 of the twist pair line TP are respectively pushed in so as to be inserted by pressure into a pressure slit 22a provided in the terminal piece 22. Thus, since the lead lines L1 to L8 of the twist pair line TP are respectively connected to the terminal piece 22 by the lever 3, connection work is carried out without using any special jigs or tools.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a modular connector mainly connected to a twisted pair wire for communication.

[0002]

2. Description of the Related Art Conventionally, a twisted pair wire has been often used as a transmission line for communication because it is excellent in noise resistance and inexpensive. The twisted pair wire is a pair of electric wires twisted together, and a communication cable in which a plurality of twisted pair wires are housed in a sheath is also provided. A modular jack or modular plug, which is a modular connector, is often used as a connector for connecting communication cables of this type to each other or to other devices.

The modular jack has a structure in which a plurality of conductive paths are provided in a housing made of an insulating material having a plug insertion recess into which a modular plug is detachably inserted. A linear contact spring protruding into the plug insertion recess is provided at one end of each conductive path, and the contact spring elastically contacts the contact of the modular plug inserted into the plug insertion recess to thereby modular jack. And the modular plug are electrically connected. In addition, a terminal portion for connecting to an external electric wire is provided at the other end of each conductive path, and in the case where a twisted pair wire is used as the external electric wire, a fork shape having a pressure welding slit between a pair of teeth is used as the terminal portion. There is provided a pressure contact type terminal piece of a type in which the formed twisted pair wire is introduced into the pressure contact slit to sandwich the core wire while stripping the insulating coating of the twisted pair wire. For each conductive path, a contact spring and a terminal piece are continuously and integrally formed by punching a sheet metal, and a contact spring formed by punching a wire rod or sheet metal and a terminal piece formed by punching a sheet metal are separately provided. Are electrically connected by a circuit board or the like.

When the modular jack having the above-mentioned structure is used for communication, it is installed on a floor surface, a wall surface, a wiring space of a free access floor, or the like.

[0005]

However, in the above-mentioned structure, when the electric wire is press-fitted into the gap of the terminal piece, the core wire is sandwiched while stripping the insulating coating of the electric wire at both side edges of the gap of the terminal piece. The required force is required for press fitting.
Therefore, use a dedicated cap-shaped jig that covers the terminal piece, and use a general-purpose tool such as pliers to push the jig toward the terminal piece side so that the wire pushes the wire into the gap between the terminal pieces. ing. That is, a dedicated jig and a tool such as pliers are required to connect the electric wire to the terminal piece.

The present invention has been made in view of the above points, and an object of the present invention is to perform the wiring work without using a dedicated jig or tool and to improve the work efficiency of the wiring work. It is to provide a modular connector with improved performance.

[0007]

According to the first aspect of the present invention,
A housing having a connection block to which the mating connector is detachably connected and a terminal block to which an external electric wire is connected, a press-contact slit projecting from the main surface of the terminal block and having an open end edge, and an insulating coating When a wire is pressed into the press-contact slit, a pressure-contact type terminal piece formed in the shape of a fork that sandwiches the core wire while stripping the insulating coating, and a contact that is electrically connected to the terminal piece and arranged on the connection base and contacts the mating connector And a lever pivotally attached to the housing so as to rotate in opposite directions between a position covering the main surface of the terminal block and a position opening the main surface. The electric wire is pushed so as to be press-fitted into the press-contact slit provided in the terminal piece.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view of a modular jack according to an embodiment of the present invention as seen from above, FIG. 2 is a schematic view of a modular jack as seen from the front of this embodiment, and FIG. It is the schematic diagram seen from the side surface of the modular jack which concerns on embodiment.
[Fig. 3] is a schematic view of the modular jack according to the present embodiment as seen from the rear. As shown in FIGS. 1 to 4, the modular jack includes a housing 1 made of a molded product of synthetic resin which is an insulating material, and the housing 1 continuously includes a contact spring 21 as a contact and a terminal piece 22. The eight conductive members 2 are held. A plug connection base 11 and a terminal base 12 are integrally formed on the housing 1. In the following description, the direction in which the terminal block 12 is extended with respect to the plug connection block 11 is the rear direction.

As shown in FIG. 2, the plug connection base 11 has a plug insertion recess 11 which is opened in the front surface of the plug connection base 11 and into which a tip of a modular plug (not shown) is inserted.
a is provided. In addition, the upper surface of the terminal base 12 in FIG. 3, which is the main surface, is located below the upper surface of the plug connection base 11.

As shown in FIG. 3, four terminal strips 22 are erected on the upper surface of the terminal block 12 in front and rear rows, and between the adjacent terminal strips 22 in one row in the left-right direction. The terminal pieces 22 in the other row are arranged in a staggered manner so as to be positioned. As described above, since the eight terminal pieces 22 are provided, it is possible to connect four sets of twisted pair wires TP, and one twisted pair wire TP of each set is located adjacent to each other in the left-right direction. It is connected to the terminal piece 22.

As shown in FIG. 5, each terminal piece 22 has a pressure contact slit 22a having an open upper end between a pair of teeth.
The side edges of the upper end portion of the pressure contact slit 22a are configured to drive the lead wires L1 to L8 of the twisted pair wire TP into the pressure contact slit 22a by increasing the distance between the side edges toward the upper side. The left and right widths of the pressure contact slits 22a are set so as to be in pressure contact with the core wires of the lead wires L1 to L8, and when the lead wires L1 to L8 are introduced into the pressure contact slits 22a,
The insulation coating of the lead wires L1 to L8 is cut at both side edges of the pressure contact slit 22a.

As shown in FIG. 3, the contact spring 21 formed continuously and integrally with each terminal piece 22 passes through the inside of the housing 1 and is provided with the plug insertion recess 1 provided in the plug connection base 11.
1a (see FIG. 2). The contact spring 21 is bent at an intermediate portion, and the tip end portion of the contact spring 21 is inclined so that the tip end is located higher in FIG. Further, the tip ends of the contact springs 21 have an upward elasticity, and are housed in comb-shaped holding portions provided inside the plug insertion recess 11a so that the tip ends of the contact springs 21 do not contact each other. ing. By holding the tip end portions of the contact springs 21 in this manner, as shown in FIG. 2, the contact springs 21 are arranged at substantially equal intervals in the left-right direction. The contact springs 21 and the terminal pieces 22 are connected so as to have the relationship shown in FIG. 6 (the contact springs 21 and the terminal pieces 22 to which the reference numerals A to H are given in FIG. 6 are connected to each other. Exist). That is, the center two of the contact springs 21 arranged in the left-right direction are connected to the set of twisted pair wires TP, and the two contact springs 21 on both sides are connected to the set of twisted pair wires. Further, the remaining two contact springs 21 at the left and right ends are connected to the twisted pair wires TP. In short, each of the terminal pieces 22 is a twisted pair wire T in which each one of the front and rear terminal pieces 22 is adjacent to each other in the left-right direction.
The contact spring 2 is connected to P.
Since the arrangement of 1 is different from the terminal piece 22 in the arrangement,
By appropriately intersecting the conductive members 2 inside the housing 1, the contact springs 21 are arranged in a desired relationship. The connection relationship between the contact spring 21 and the terminal piece 22 in FIG. 6 is an example, and another connection relationship may be adopted as necessary.

By the way, in the modular jack of this embodiment, in order to facilitate the work of connecting the lead wires L1 to L8 of the twisted pair wires TP to the terminal pieces 22, as shown in FIGS. A lever 3 is provided. The lever 3 is a molded product of synthetic resin, and is formed on both side surfaces of the terminal block 12 in the housing 1 as shown in FIG.
When the shaft pin 3a of the lever 3 is pivotally attached to the hook-shaped hook 12a for pivotally attaching the shaft pin 3a, the position where the terminal pin 12 is covered and the terminal piece 22 is covered. Is opened and the terminal piece 22 is exposed to rotate about the shaft pin 3a pivotally mounted on the hook 12a. As shown in FIG. 4, the lever 3 includes a pair of left and right side plates 3b and a lid plate 3 that continuously and integrally connects upper portions of the side plates 3b.
and one side plate 3b of the two side plates 3b.
A shaft pin 3a pivotally mounted on the hook 12a is provided at the end not connected to the cover plate 3c of the.
At the end of the other side plate 3b that is not connected to the cover plate 3c, locking notches 12b provided on both side surfaces of the terminal block 12 are provided.
A locking hook 3d that is locked to is provided.

The cover plates 3c of the two levers 3 are formed in such a shape as to cover the four terminal pieces 22 out of the four terminal pieces 22 provided in the front and rear two rows, respectively. In the above, the cover plate 3c of each cap cover 3a is configured to cover the four terminal pieces 22 on the left and right respectively with respect to the rear direction of the plug connection base 11. Further, a concave portion 3e for accommodating a protruding portion of the terminal piece 22 from the terminal base 12 is formed on a surface of the lid plate 3c which covers the terminal piece 22.

The shaft pin 3a of the cap cover 3
Is pivotally attached to hooks 12a provided on both side surfaces of the terminal block 12, and the cap cover 3 is rotated about the axis pin 3a, so that the terminals of the terminal piece 22 are inserted into the recesses 3e provided in the cover plate 3c. The lead wire L1 to L8 of the twisted pair wire TP is attached to the terminal piece 22 by the cover plate 3c by accommodating the protruding portion from the base 12 and locking the locking hook 3d to the locking notch 12b. It will be pushed into 22a.

Therefore, according to the present embodiment, the lead wires L1 to L8 of the twisted pair wire TP are pushed by the lever 3 so as to be press-fitted into the press-contact slits 22a provided in the terminal piece 22, so that a jig or a tool is separately used. Each of the lead wires L1 to L8 of the twisted pair wire TP can be connected to the terminal piece 22 without any need. Further, as compared with the distance from the fulcrum of the lever 3 (the portion where the shaft pin 3a is provided in this embodiment) to the point of action (the portion that connects the lead wires L1 to L8 to the terminal piece in this embodiment), Since the distance from the fulcrum to the part that applies the pressing force to the lever 3 can be made sufficiently large, each lead wire L1 to L
8 can be pushed into the pressure contact slit 22a of the terminal piece 22.

The terminal piece 22 covered by the cover plate 3c is not limited to the above-mentioned terminal piece 22. Further, in the present embodiment, the case of the twisted pair wire TP has been described, but the present invention is not limited to this, and the same effect can be obtained when another communication cable such as a coaxial cable is used.

[0018]

According to the first aspect of the present invention, the housing is provided with the connection base to which the mating connector is detachably connected and the terminal base to which the external electric wire is connected, and the tip end is open so as to protrude from the main surface of the terminal base. When a wire with an insulation coating is pressed into the insulation slit, it is electrically connected to the pressure contact type terminal piece that is formed like a fork that sandwiches the core wire while stripping the insulation coating. In a modular connector that is arranged on a base and that includes a contact that comes into contact with the mating connector, in a housing that rotates in opposite directions between a position that covers the main surface of the terminal block and a position that opens the main surface. Since it is equipped with a lever that is pivotally attached, and the lever pushes the wire into the press-contact slit provided in the terminal piece, the lever moves the wire into the terminal piece. Since the lever is provided so as to rotate in the opposite directions, and the electric wire is press-fitted into the press-contact slit of the terminal piece by the two levers, the press-fitting It was possible to provide a modular connector in which the force can be reduced by half, and the wiring work can be performed without using a dedicated jig or tool, thereby improving the work efficiency of the wiring work.

[Brief description of drawings]

FIG. 1 is a schematic view of a modular jack according to an embodiment of the present invention as viewed from above.

FIG. 2 is a schematic view of the modular jack according to the present embodiment as viewed from the front.

FIG. 3 is a schematic view seen from a side surface of the modular jack according to the present embodiment.

FIG. 4 is a schematic view of the modular jack according to the present embodiment as viewed from the rear.

FIG. 5 is a schematic view showing a terminal piece according to the present embodiment.

FIG. 6 is a schematic diagram showing a connection relationship between a terminal piece and a contact spring according to the present embodiment.

[Explanation of symbols]

 1 Housing 2 Conductive Member 3 Lever 3a Shaft Pin 3b Side Plate 3c Lid Plate 3d Locking Hook 3e Recess 11 Plug Connection Base 11a Plug Inserting Recess 12 Terminal Block 12a Hook 12b Locking Notch 21 Contact Spring 22 Terminal Piece 22a Pressure Contact Slit TP Twisted Pair Wire L1 to L8 Lead wire

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiko Amano 1048, Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd.

Claims (1)

[Claims] 1. A housing having a connection block to which a mating connector is detachably connected and a terminal block to which an external electric wire is connected, and a press-contact slit having a leading edge opened and projecting from a main surface of the terminal block, When an electric wire with an insulation coating is press-fitted into the insulation displacement slit, a pressure-contact type terminal piece formed in the shape of a fork that sandwiches the core wire while stripping the insulation coating, and is electrically connected to the terminal piece and placed on the connection base and the other side In a modular connector provided with a contact for contacting the connector, a lever pivotally attached to the housing so as to rotate in opposite directions between a position covering the main surface of the terminal block and a position opening the main surface. A modular connector comprising: the electric wire, wherein the lever presses the electric wire so as to press the electric wire into a press-contact slit provided in the terminal piece.