JPS60170179A - Contactor for connector and method of producing same - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION In particular, the present invention relates to a connector contact suitable for a modular connector used in a telephone, a measuring instrument, etc., and a method for manufacturing the same.

In recent years, small and inexpensive connectors called modular connectors have been used in telephones, measuring instruments, and the like. This type of modular connector consists of a modular connector socket 10 and a modular connector plug 20, as shown in perspective view in FIG. 1 of the accompanying drawings. Generally, the housing 1 of the modular connector socket 10
1 is molded from a plastic material, and the mounting groove 12 provided on the side surface allows the panel 30 to be fixed to the opening 31. The front face of the housing 11 is provided with a plug receiving opening 13 for receiving a mating modular connector plug 20. Further, a plurality of contacts 40 are arranged in the housing 11 so as to face upwardly into the plug receiving opening 13. These contacts 40 are best shown in FIG. 2, which shows a longitudinal section of the modular connector socket 10. a contact portion 41 that extends above the plug receiving opening 13 and is bent so as to be contacted by the contact 50 of the modular connector plug 20 inserted therein; and a crimp portion 42;
The crimping portion 42 of the wire 43 is inserted into the contact array hole 14 of the housing 11 and fixed to the housing l1.

As shown in the partially enlarged view of FIG. 3, the conventional structure of these contacts 40 includes a crimping part 42 and a core crimping part 42A at the front end.
It has a cover crimping part 42B at the rear end, and the core crimping part 42A of the crimping part 42 is connected to the rear end of the contact part 40 and the core wire 43A at the end of the electric wire 43 exposed by the terminal treatment. The cover crimped part 42B of the crimping part 42 is crimped against the cover 43B of the end of the electric wire 43, thereby establishing an electrical and mechanical connection between the contact part 40 and the core wire 43A of the electric wire 43. It was something.

Next, the conventional manufacturing method of such a conventional contactor will be briefly explained with reference to FIGS. 5, 6, and 7. As schematically shown in FIG. 5(A), First, a metal reel material such as a brass material is pressed into the carrier 44A1, the tension part 44B, the core crimped part 42A, and the cover crimped part 42.
5 (B).
As schematically shown in , a carrier 44A carrying a series of crimping parts 42 is wound up on a crimping part reel 45.

On the other hand, the metal lead material for forming the contact portion 41 of the contactor 40 is obtained by supplying an untreated metal lead material 41A from a supply reel 46 to a gold plating solution 47A in a plating tank 47, as shown schematically in FIG. It is sent out through the inside and wound up on a lead material reel 48 as a plated metal lead material 41B. Such gold plating is applied so that when a metal lead material is used as the contact part 41, it is resistant to corrosion and can obtain good electrical contact with a mating contact. .

Next, as shown in the schematic front view of FIG. 7(A) and the schematic side view of FIG. 7(B), in the crimping step, i1! The carrier 44A carrying a series of crimping parts 42 from the crimping part reel 45 provided thereon is transferred to the lower die 49A of the crimping die.
send it upwards. At the same time, the electric wire 43 with the terminal treated is placed in a position aligned above the crimping part 42 located on the lower mold 49A of the crimping die. Further, the plated metal lead material 41B is fed from the lead material reel 48 prepared as described above through the feeder 49B and the cutting punch 49C, further above the aligned crimp portions 42 and the ends of the electric wires 43. In this way, by lowering the crimp die upper mold 49D relative to the crimp die lower mold 49A and the cutting punch 49C in which the crimp part 42, the electric wire 43, and the metal lead material 41B are set, the contact portion of the metal lead material 41B is removed. 4I, the end of the contact part 41, the crimping of the core wire crimped part 42A of the crimping part 42 to the core wire 43A of the electric wire 43, and the crimping of the covering crimped part 42B of the crimping part 42 to the covering 43B of the electric wire 43. At the same time, connector contacts as shown enlarged in FIG. 3 are formed. 4(A) is a sectional view taken along the line AA in FIG. 3, and FIG. 4(B) is a sectional view taken along the line BB in FIG. 3.

The conventional connector contact formed in this manner has the following problems.

(1) Although it is sufficient that the portion of the contact portion 41 that protrudes forward from the crimping portion 42 is plated with gold, the portion of the contact portion 41 that is crimped to the core wire crimping portion 42A is also plated with gold. It ended up being gold-plated, which added to the price unnecessarily.

(2) For the contact part, a continuous gold-plated lead material 41B is fed by a feeder 49B and cut by a cutting punch 49.
Since it is formed by cutting at G, the plating peels off or scratches occur during that time, resulting in a lack of reliability.

(3) Since the tip of the contact part 41 remains cut after plating, it becomes an edge shape and the cut part is not plated, and when the contact is assembled into the housing, the tip of the contact part 41 is cut off. There were problems such as damage to the cut surface and corrosion from the cut surface.

(4) Since both the end of the contact portion 41 and the core wire 43A of the electric wire 43 are crimped at the core wire crimping portion 42A while floating from the crimping portion 42, the core wire crimping portion 4
In order to prevent the core wire 43A from being caught in the seam of the wires 2A, it is necessary to perform crimping with the core wire 438 on the lower side and the end of the contact portion 41 on the upper side, as shown in FIG. As shown by reference numeral O in B), the seam after the crimping part of the core wire crimped part 42A has an O-ring shape because the end of the round bar-shaped hard contact part 41 is located immediately below it. Put it away. Therefore, sufficient crimping force may not be obtained, or the center of the core wire 45A may become unstable.

(5) As mentioned in the above (4), since the end of the contact part 41 and the core wire 43A of the electric wire 43 are both kept floating from the crimping part 42, they are crimped and caulked at the same time.
The connector housing was sometimes bent, making it difficult to assemble it into the connector housing.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and provide a connector contact that is inexpensive, reliable, and easy to handle, and a method for manufacturing the same.

The connector contact according to the present invention includes a crimping part having a contact crimping part at the front end, a core crimping part at the center, and a covering crimping part at the rear end, and the crimping part protrudes forward of the crimping part. and a contact portion crimped to the crimping portion, so that the electric wire can be crimped to the crimping portion by being pulled out to the rear of the crimping portion, and the contact caulking portion of the crimping portion is crimped to the contact portion. Plating is applied only to the portion of the contact portion that protrudes forward from the crimp portion, and the core wire crimping portion of the crimp portion is crimped to the contact portion and the core wire of the electric wire. In contrast, the cover crimping portion of the crimping portion can be crimped to the cover of the electric wire.

In addition, the method for manufacturing a connector contact of the present invention includes forming a series of crimping parts having a contact crimping part at the front end, a core crimping part at the center, and a cover crimping part at the rear end and connected by a reel-shaped carrier. Then, using the tip of the continuous lead member for the contact portion as a feeder, feed it onto the contact caulking portion and the core wire caulking portion of one of the crimping portions, and crimping the contact caulking portion to the tip of the lead member. , the lead member is cut at a predetermined distance from the contact caulking part to form a contact part crimped and held by the crimped part, and this process is repeated thereafter to form a series of contact parts crimped and held by the series of crimped parts. , plating is applied only to the portions of the series of contact parts that protrude forward from the crimping part, and the exposed core wire of the terminal-treated electric wire is located at the core wire crimping part of the crimping part. Place the wire against the series of crimping parts so that the wire is located above the end of the contact part and the covering portion of the wire end is located on the covering crimping part of the crimping part, and crimping the core wire. Crimp the crimped part to the end of the contact part and the core wire, and the crimped part to the crimped part of the wire, and
The present invention is characterized in that each of the carriers is separated from the reel-shaped carrier.

Next, the present invention will be described in more detail with regard to embodiments of the present invention based on FIGS. 8 to 13 of the accompanying drawings.

FIG. 8 is a schematic diagram for explaining the first step in an embodiment of the method for manufacturing a connector contactor of the present invention.

As schematically shown in FIG. 8, in order to manufacture the connector contact of the present invention, first, a metal reel material such as a brass material is assembled into a carrier 144A, a cant portion 144B, and a contact caulking portion 142A in a pressing process. A crimp portion 142 consisting of a wire crimp portion 142B and a covering crimp portion 142C is continuously formed. Then, the tip of the continuous contact lead member 141B that has not been subjected to special plating treatment such as gold plating,
The wire is passed through a feeder 149B and a cutting punch 149C, and fed onto one contact caulking portion 142A and the core wire caulking portion 142B of the crimp portion 142. Next, contact caulking portion 14
2A to the tip of the lead member 141B,
The lead member 141B is cut at a predetermined distance from the contact caulking portion 142A using a cutting punch 149C to form a contact portion 141 which is crimped and held by the crimp portion 142. The cut end of the contact portion 141 may be subjected to a surface polishing process in the next step, as indicated by reference number 141C. Thereafter, these steps are repeated to form a series of contact parts 141 crimped and held by a series of crimping parts 142,
A carrier 144A carrying a series of these crimping parts 142 and contact parts 141 is wound up into a crimping part and contact part reel 145, as schematically shown in FIG.

In the next second step, as shown schematically in FIG.
45, a series of crimping parts 1 which hold the contact part 141 in a crimped manner.
42 is sent out, and only the portion a protruding from the contact caulking portion 142A of the contact portion 141 crimped and held by the crimp portion 142 is immersed in the gold plating solution 147 in the plating tank 147. The contact part 141
Gold plating is applied to only the portion a, and then the plated crimp portion and contact portion is wound onto the reel 146 again.

In the third stage, which is the next crimping process, Fig. 11 (A)
As shown in the schematic front view and the schematic side view in FIG. 11(B), a carrier carrying a series of crimping parts 142 and contact parts 141 from the plated crimping part and contact part reel 146 prepared as described above is shown. 144A is sent onto the lower mold 149A of the crimping die. At the same time, the crimping die lower mold 1
The electric wire 143 with the terminal treated is placed in a position aligned above the crimping part 142 located on 49A. At this time, the exposed core wire 143A of the wire 143 that has been terminal-treated is attached to the crimp portion 1.
Contact portion 14 located at core wire caulking portion 142B of 42
1, and the covered portion 143B of the terminal of the electric wire 143 is located on the covered crimped portion 1 of the crimp portion 142.
42C. In this way, by lowering the crimp die upper mold 149D with respect to the crimp die lower mold 149A in which the crimp part 142 and the electric wire 143 are set, the core wire crimping part 142B is attached to the contact part 141.
The covering caulked portion 142C is attached to the end portion of the wire and the core wire 143A.
is crimped to the covering portion 143B of the electric wire 143, and each of the crimped portions 142 is separated from the reel-shaped carrier 144B by cutting the bottom portion 144B.

Connector contacts manufactured in this way】40-1
12 is a partially enlarged view, and FIG. 13 (A) is a sectional view taken along the line A-A in FIG.
) is a sectional view taken along the line B-B in Fig. 12, and Fig. 13 (C) is
13 is a sectional view taken along the line CC in FIG. 12. FIG.

As clearly shown in FIGS. 12 and 13, the connector contact 140 as an embodiment of the present invention manufactured in this manner has a contact caulking portion 42A at the front end and a center portion at the center. Line caulking part 142B.

A crimping part 142 having a cover crimping part 142C at the rear end;
The crimp portion 142 is protruded in front of the crimp portion 142.
The contact portion 141 is crimped to the crimping portion 141 , and the electric wire 143 is crimped to the crimping portion 142 so as to be pulled out to the rear of the crimping portion 142 . It is crimped against (
13(C)), only the portion a of the contact portion 141 that protrudes forward from the crimp portion 142 is gold-plated, and the wire crimped portion 142B of the crimp portion 142 is plated with the contact portion 141 and the wire. 143 (see FIG. 13(B)), and the covering crimped portion 142C of the crimping portion 142 is crimped to the covering 143B of the electric wire 143 (see FIG. 13(B)). See A). In addition, in this embodiment, as clearly shown in FIG. 13(B),
The core wire 143A of the electric wire 143 is located on the side facing the crimp seam of the core wire crimped portion 142B, and the contact portion 1 is located below the core wire 143A.
The contact portion 141 is crimped into an F crimp type as shown by reference numeral F, with the rear end of the contact portion 141 being positioned, and the tip of the contact portion 141 is surface-shaped 141C and plated.

Since the connector contactor and the manufacturing method thereof of the present invention have the above-described configuration, it has the following effects.

(1) Since the contact portion 141 is only partially plated, expensive plating solution such as gold plating solution can be saved, and the evaluation of the contact as a whole can be reduced. I can do it.

(2) Before plating, the contact portion 141 continuously feeds lead material using a feeder, and after cutting, crimping and caulking, partial plating is applied, so that the plating does not peel off or the surface is scratched after plating.

(3) The tip of the contact portion 141 is cut before plating, and plating can be applied after the cut portion is polished, so no edges remain on the optical cross section.
Since no plating is left untreated, there are no problems such as injury to a person's fingers or corrosion progressing from the cut surface when assembling the contact to the connector housing.

(4) The end of the contact portion 141 is first crimped and caulked to the contact caulking portion 1428, and then the wire 1 is attached to the core caulking portion 142B.
Since the core wire 143A of 43 is crimped and caulked, the wire 143
F-crimping is possible for the wire crimping, and when F-crimping is used, the wire crimping and crimping of the electric wire 143 is stable, but the inconvenience of the wire 143A being caught in the seam of the wire crimping portion 142B does not occur. do not have.

(5) Since the contact portion 141 is crimped and caulked to the contact caulking portion 142A in the first stage pressing process, the contact portion 141
1 does not bend, and there is no problem when attaching the contact to the connector housing.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing an example of a modular connector;
2 is a schematic vertical sectional view of the modular connector socket of the modular connector of FIG. 1, and FIG. 3 is a partially enlarged view showing an example of a conventional connector contact used in the modular connector of FIG. 1. , Figure 4 (^) is a cross-sectional view taken along line A-A in Figure 3, Figure 4 (B) is a cross-sectional view taken along line B-B in Figure 3, and Figure 5 is a cross-sectional view taken along line B-B in Figure 3.
6 and 7 are schematic diagrams for explaining an example of the conventional manufacturing method for forming the contactor for the connector of FIG. 3, and FIGS. A schematic diagram for explaining the first step in one embodiment of a method for manufacturing a contact, FIG. 1O is a schematic diagram for explaining the second step, and FIGS. A schematic diagram for explaining the three steps, FIG. 12 is a partially enlarged view showing a connector contact formed by the manufacturing method of the present invention, and FIG.
Figure (^) is a sectional view taken along line A-A in Figure 12, and Figure 13 (13
) is a sectional view taken along the line B-B in Figure 12, and Figure 13 (C) is the 1st cross-sectional view.
FIG. 2 is a sectional view taken along line CC in FIG. 2; 140... Connector contact, 141... Contact part,
141B...Lead member for contact part, 141C...Face lug, 142...Crimp part, 142A...Contact crimping part, 142B...Core crimping part, 142C...Coating crimping part, 143 ... Electric wire, 143A ... Core wire,
143B...Covered portion, 144A...Carrier, 1
44B...Cut part, 147...Plating tank, 147
A...Plating solution, 149A...Crimping die lower mold, 1
49B...Feeder, 149C...Cutting punch,
149D...Crimping die upper mold. Whistle diagram 3 (A) (8) Figure 5 (A) (B) 71 et al. Figure 6

Claims (5)

[Claims] (1) A crimping part having a contact crimping part at the front end, a core crimping part at the center, and a covering crimping part at the rear end, and a contact part crimped to the crimping part so as to protrude forward of the crimping part. A contact for a connector, the contact crimping portion of the crimp portion being pulled out to the rear of the crimp portion so as to be able to crimp an electric wire to the crimp portion, the contact crimp portion of the crimp portion being pulled out to the rear of the crimp portion. Plating is applied only to the portion of the contact portion that protrudes forward from the crimp portion, and the core wire crimping portion of the crimp portion connects the contact portion to the core wire of the electric wire. A contact for a connector, characterized in that the crimping part is crimped against the covering of the electric wire, and the covering caulking part of the crimping part is crimped against the covering of the electric wire. (2) The core wire crimp portion is crimped in an F crimp type such that the core wire of the electric wire is located on the side facing the crimp seam and the rear end of the contact portion is located below it. A connector contact according to claim (1). (3) The connector contact according to claim (1) or (2), wherein the tip of the contact portion is surface-brushed and plated. (4) Forming a series of crimping parts with a contact crimping part at the front end, a core crimping part at the center, and a covering crimping part at the rear end, connected by a reel-shaped carrier, and the tip of the continuous lead member for the contact part. is fed into one of the contact crimping parts and the core crimping part of the crimping part by a feeder, the contact crimping part is crimped against the tip of the lead member, and the lead member is removed from the contact crimping part. Cut at a predetermined distance to form a contact portion that is crimped and held on the crimped portion, and then repeat this process to form a series of contact portions that are crimped and held on a series of crimped portions. Plating treatment is applied only to the portion protruding forward from the crimping part, and the exposed core wire of the terminal-treated electric wire is located above the end of the contact part located in the core wire crimping part of the crimping part. In addition, the wire is arranged with respect to a series of crimping parts such that the covering portion of the wire end is located on the covering crimping part of the crimping part, and the core crimping part is placed on the contact part end and the core wire. On the other hand, a method for manufacturing a contact for a connector, characterized in that the covering crimp portion is crimped to a covering portion of an electric wire, and each of the crimp portions is separated from the reel-shaped carrier. (5) The method for manufacturing a contact terminal for a connector according to claim (4), wherein a surface polishing process is performed on the tip of each contact portion before the plating process is performed.