JPH043411Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a modular plug that is attached to the end of a cable for easy connection with a telephone or electronic equipment, and more specifically relates to improvements in the contacts of the modular plug. .

[Conventional technology]

Recently, a method has been adopted in which, for example, a telephone set and an outside line cable, or a cable between a telephone set and a handset are simply connected using a modular plug and a modular jack.

As shown in FIGS. 8 and 9, this type of modular plug 100 has a plurality of blades 104 of a contact 103 protruding in parallel from one surface end side 102 of an insulating housing 101, and the plurality of blades 104 are dedicated to It was crimped with a crimping tool 107 and connected to the core wire.

The contact 103 has a plate-like blade 104 on one end, a sharp cutting edge 105 on the other end, and is press-fitted into a narrow groove 106 on the tip end 102 of the contact 103. Since the cutting edge 105 is arranged parallel to the cable core wire 108, it can be used only for the core wire 108 made of a thread bundle wrapped with copper foil.

[Problem that the invention attempts to solve]

Since the contact 103 has a plate-like blade 104 on one end surface as a contact portion, a smooth surface cannot be obtained due to sagging of the press sheared surface, etc., and a smooth connection with the wire 110 of the modular jack 109 can be obtained. It was something I didn't have. Therefore, with repeated use, the sag of the blade 104 on one end of the plate-like structure functions as a cutting edge, resulting in disadvantages such as damage to the wire 110.

Furthermore, when the contacts 103 are press-fitted into the crimping block of a crimping tool (not shown) to connect the core wires, in addition to the fact that the insulating housing 100 is bent due to the press-fitting, there is also a difference in the dimensions of the narrow grooves 106. , the pushing position of each contact 103 may be slightly shifted. Such contact 103...
The difference in the press-fitting position of the blade 104 on one end surface of the plate-shaped plate sometimes caused poor continuity. This is because, in the case of the electrical connector described in Utility Model Publication No. 58-21489, every other contact that contacts the wire of the modular jack is misaligned.
There is a difference in contact force with the modular jack, which leaves a synergistic problem in that stable contact cannot be obtained.

Furthermore, the modular plug 100 is not suitable for connecting single wires, and the current wire materials have high line resistance and cannot be used. For this reason, a modular plug that can connect single wires was desired.

The present invention was devised in view of the above-mentioned problems, and provides a modular plug that has a completely smooth surface in contact with the modular jack to provide a reliable connection, and can also be used for single wires. The purpose is to provide.

[Means for solving problems]

The modular plug according to the present invention to achieve the above object has a structure including an insulating housing having a recess, and a U-shaped groove slit having contacts at one end that are exposed in parallel from the insulating housing and connected to the core wire. The contact block includes an elongated contact having a terminal at the other end and a contact block fitted into a recess of the insulating housing with the contact sandwiched therebetween, and the contact is bent into a convex shape from the plate surface to form a contact part. A convex portion is formed in the insulating housing to match the shape of the contact portion, the contact portion is supported by the convex portion, and the contact block is provided between the contact of the contact and the slit terminal. The device is characterized in that a fixing portion is formed that is pushed in and fixed.

[Effect]

The contact portions of the contacts supported by the insulating housing are protruded. Since the contact portion is protruded with a smooth plate surface, good contact with the modular jack can be made along the plate surface.

Further, the contactor is firmly fixed to the insulating housing by the contact block, and the convex contact portion closely overlaps the convex portion of the insulating housing. Therefore, the contactor does not swing even when pressed by the wire of the modular jack and is extremely stable.

Furthermore, since a fixing part is formed between the contact of the contact and the slit terminal to be pushed and fixed by the contact block,
The force when press-fitting the core wire into the slit terminal is absorbed by the fixed part and is not transmitted to the contact.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to FIGS. 1 to 7.

In the figure, reference numeral 1 denotes an insulating housing, which includes a protrusion 2 for positioning a contact blade of a contact 6, a recess 3 for fitting a contact block 5 (described later), and a wire for connecting to the contact 6 (see Fig. It consists of a presser block 4 that presses down the outer jacket of the presser (not shown).
5 is a contact block fitted into the recess 3;
The contact 6 is located in the center of the insulating housing 1.
Push in to position and fix the contact 6. 7 is a hole formed in the contact block 5 into which the slit terminal 8 of the contact 6 is inserted; when the contact block 5 is press-fitted,
This is for guiding and inserting the end of the slit terminal 8. Reference numeral 9 denotes a hole into which a core wire of a wire (distribution cable) not shown is inserted, and with the core wire inserted into this hole 9, the contact block 5 is press-fitted.
Connect with contact 6. Reference numeral 10 denotes a cable insertion portion for guiding and holding a wiring cable (not shown), and reference numeral 11 denotes a stopper formed in a corrugated manner on the inner surface thereof. Further, reference numeral 12 designates a presser block connected to the contact block 5 via a thin hinge 13, and is fitted into the cable insertion portion 10 with a claw 14.

Next, the assembly procedure will be explained according to FIG. The insulating housing 1 and the contact block 5, which are integrally molded from an insulating material, have the shapes shown in the drawings, and are pushed into the groove of the insulating housing 1 with the contact carrier 15 still attached. Thereafter, it is fixed to the insulating housing 1 by heat welding at portion C and portion B shown in FIG. Then, the contact carrier 15 is folded at the notch at the C portion and removed. Thereafter, the cable is attached along the cable insertion part 10, and its core wire is inserted into the hole 9 shown in FIG.
The core wires are press-fitted and connected.

Specifically, the contact 6 is a contact part between the removal part 20 to which the contact carrier 15 is attached and the wire of the modular jack, and
It consists of a convex part 21 which is plated only, a fixing part 22 which is pressed and fixed by a contact block 5 of an integrated structure, and a slit terminal part 23 in which a slit terminal 8 of a U-shaped groove connected to the core wire is formed.

Further, after assembly, the folded portion C is broken off from this portion, and the contact carrier 15 is removed.

In this way, according to the same embodiment, contact 6
Contact block 5 for connecting the core wire with
The holding block 12 for fixing the wire (sheath) to the insulating housing 1 has an integrated structure, and the contact block 5 also has a contact portion protrusion 2.
Since the bent contact 6 having the contact point 1 is fixed, the contact portions of the modular jack with the wire are arranged horizontally in a row, a completely smooth surface is obtained, and the contact point portion of the Au It can be seen that the abrasion resistance of the plating increases. Further, the number of parts can be reduced and the assembly work can be simplified.

Further, the contact 6 can be easily and inexpensively plated locally by attaching the convex portion 21 to a door or the like. As a result, compared to conventional devices in which the plate-shaped end surface is used as the contact portion, for example, there is no peeling of the Au plating and there is no possibility of poor contact.

Furthermore, no special tools are required for assembling the contacts 103, and contacts with slightly different shapes can be integrated to enable automatic manufacturing and assembly.

[Effect of idea]

As is clear from the above explanation, according to the present invention, since the contact portion is plate-like and not press-fitted, the connection can be made in a smooth state, preventing peeling such as plating, and providing a reliable connection. . Moreover, since only the necessary protruding parts can be plated, the plating cost is significantly lower, and there are various advantages such as a small number of parts.

In addition, the contact is firmly fixed to the insulating housing by the contact block, and the convex contact part overlaps and is supported by the convex part of the insulating housing, so that it can connect with the wire of the modular jack. A very stable electrical contact is obtained.

Furthermore, since the force when press-fitting the core wire into the slit terminal is absorbed by the fixing portion and is not transmitted to the contact, deformation or displacement of the contact can be prevented.

[Brief explanation of the drawing]

1 to 7 show an embodiment of the modular plug according to the present invention, and FIG. 1 is a vertical cross-sectional view of the same, and FIG.
The figure is a partially sectional plan view, Figure 3 is a side view of the same,
Fig. 4 is a side view of the contact block, Fig. 5 is an exploded perspective view of the modular plug, Fig. 6 is a side view of the contact, Fig. 7 is a plan view, Fig. 8 is a longitudinal sectional view of a conventional modular plug, and Fig. 9. is a longitudinal cross-sectional view of the same in use. DESCRIPTION OF SYMBOLS 1... Insulating housing, 2... Convex part of insulating housing, 3... Recessed part of insulating housing, 4... Presser block, 5... Contact block, 6...
Contact, 8... Slit terminal, 10... Cable insertion portion, 12... Presser block, 13... Thin hinge, 15... Contact carrier, 21...
...Convex part (contact part of contact), 22... Fixing part of contact, 23... Slit terminal part.

Claims (1)

[Scope of utility model registration request] An insulating housing having a concave portion, an elongated contact having a contactor exposed in parallel from the insulating housing at one end and a U-shaped groove slit terminal connected to a core wire at the other end, and sandwiching this contact. a contact block fitted into the recess of the insulating housing, the contact is bent into a convex shape from the plate surface to form a contact part, and the insulating housing has a convex shape corresponding to the shape of the contact part. a portion is formed, and the contact portion is supported by this convex portion,
A modular plug, wherein a fixing part is formed between the contact piece of the contact and the slit terminal to be pushed and fixed by the contact block.