JPH0256790B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Application of the Invention) The present invention relates to a unitized female contact in a multicore connector used in a computer, etc.
The present invention relates to a manufacturing method thereof.

(Prior art) The contact holding structure of a conventional multi-conductor connector is made by embedding a large number of conductive materials as contacts in the resin when molding the mounting base of the connector with a synthetic resin material. When using the embedding molding method and resin molding of the contact holding member, a through-hole into which the conductive material of the contact is inserted is formed in advance, and the conductive material is fitted one by one into the through-hole. There is a planting method.

The embedded type has exposed contact portions and is mainly used for male connectors with a simple structure.

In the implantation method, in order for the contact part to make elastic contact with the male contact, the contact position is accurately located relatively deep in the contact holding member by approaching the guide hole or groove of the male contact. The area around the contact part must be held relatively loosely so that the elastic piece can act elastically, and the area around the contact must be held tightly so that the elastic piece does not undergo significant deformation. Mainly used for female connectors with

(Problems to be Solved by the Invention) In the conventional planting method, the conductive material as a contact is inserted one by one into a through hole provided in a contact holding member, which results in poor assembly workability. . In addition, in recent years, in order to downsize connectors, it has become desirable to have contacts with a narrow cross-sectional area and a long and thin shape, but such small and long contacts are difficult to handle manually and are fragile. There is a problem that it is easy to bend and the workability and productivity are worse.

(Means for Solving the Problems) According to the present invention, a tapered cut is made in the longitudinal direction at one end of a strip-shaped conductive material to form a plurality of female contact pieces that serve as bifurcated contact portions. A plurality of female contacts are aligned and overlapped so that the plurality of female contact pieces are overlapped, and the plurality of female contact pieces are connected via a separable conductive connection piece, and the plurality of female contact pieces are connected together. By embedding and connecting the contact pieces with a contact support made of synthetic resin, the required number of elongated strip-shaped female contact pieces with tapered notches in the longitudinal direction can be changed to an appropriate number of conductive connection pieces. a step of punching out a plurality of female contact piece connecting plates connected to each other via a plurality of female contact piece connecting plates; a step of overlapping a plurality of female type contact piece connecting plates using an alignment means so that the tapered notches are aligned; A process of embedding and molding a plurality of overlapping female contact piece connecting plates with a synthetic resin so as to connect and hold the female type contact piece connecting plates at appropriate places except for the tapered notches and connecting pieces, and this resin molding. After that, the connecting piece of the female contact piece on each female contact piece connecting plate is separated, and the female contact piece formed by overlapping the plurality of female type contact pieces is individually separated. , the above problems are solved.

(Function) A female contact piece connecting plate with a bifurcated contact portion of the same shape and a large number of female contact pieces is made by punching, and after stacking multiple pieces, an embedding method is used. The female contact piece connecting plates and each female contact piece are firmly fixed with resin molding to form a female contact unit having a plurality of electrically independent female contacts. make.

Therefore, the workability is good, and since the female contact is made by overlapping a plurality of female contact pieces, a multiple contact with at least two male and female electrical contact points is constructed. The reliability of the electrical connection is high, and since a thin plate material can be used as the conductive material, punching is easy, and it is also possible to punch out continuous strips using a roller die, resulting in high workability.

(Embodiment) Fig. 1 is a front perspective view of a female contact unit A as an embodiment of the present invention. A mold contact 4 is a contact support made of synthetic resin that holds the base of each female contact 1 by embedding, and 5 is a
One of the female contact pieces 2 and 3, for example, an extension portion 3e connected in the opposite direction from the base of the female contact piece 3.
This is a terminal support made of synthetic resin that is held in the middle by embedding.

Female contact pieces 2 and 3 in each female contact 1
As shown in FIGS. 2 and 3, a relatively thin conductive material with a high elastic modulus is punched out to form a plurality of adjacent female contact pieces 2 and a plurality of female contacts. Female contact piece connecting plates 2A, 3 in which adjacent pieces 3 are connected to each other by connecting pieces 2a and 3a provided at two or more locations in the longitudinal direction, respectively.
It is made as A.

The female contact piece connecting plates 2A and 3A are made by rolling or continuously punching a long strip plate.
Workability can be improved by processing the plurality of female contact pieces 2 and 3 as a continuous strip material, and cutting out the required number of continuous female contact pieces from the strip material. .

Tapered notches 2b and 3b are made at the free ends of the female contact pieces 2 and 3 to form contact portions, so that when both female contact pieces 2 and 3 are overlapped, each contact portion is accurately joined. be.

In order to easily align both contact parts, a hole 2 is provided between the connecting pieces 2a and 2a' of one female contact piece 2.
c, 2c' and the connecting pieces 3a, 3a' of the other female contact piece 3 are provided with upwardly projecting protrusions 3c, 3c', and each hole 2c, 2c' The protrusions 3c and 3c' are fitted into the respective parts.

In addition, between the holes 2c and 2c' and between the protrusions 3c and 3
The holes 2d and 3d provided between c′ and 3d coincide with each other to form a through hole when both female contact pieces 2 and 3 are overlapped, and when molding the contact portion support 4,
Both contact pieces 2 and 3 are filled with resin material into the through holes.
This is a strong fixed connection.

FIG. 2 shows a first contact piece before embedding, which is made by connecting a large number of female contact pieces 2 without an extension part for connecting terminals.
A female contact piece connecting plate 2A is shown.

FIG. 3 shows a second female contact piece connecting plate 3A before embedding, which is formed by connecting a large number of female contact pieces 3 having extension portions 3e for connecting terminals.

First and second female contact piece connecting plates 2A, 3A
are positioning holes 2c, 2c' and protrusions 3c, 3.
c′ are fitted and overlapped, and the front and rear connecting pieces 2
the hole 2c between a, 3a and 2a', 3a';
The contact portion support 4 is resin-molded by filling a synthetic resin material into the fitting portions between the projections 2c' and the protrusions 3c and 3c', and the holes 2d and 3d between them.

In addition, the terminal part is supported by embedding molding at the same time as the resin molding process of the contact part support body 4, with the ends of the extension parts 3e for the connection terminals of the female contact piece connecting plate 3A remaining slightly. The body 5 is molded with resin.

Although the molding steps for the contact portion support 4 and the contact portion support 4 may be separated, they are usually performed in the same step.

After molding the contact portion support 4 and the terminal portion support 5, the respective connection pieces 2a, 2a', 3 in the first and second female type contact piece connection plates 2A, 3A are superimposed.
A and 3a' are separated, and then, if necessary, the extension portion 3e is bent to complete the female contact unit A.

Note that in the female contactor unit A shown in FIG.
A is a means for positioning and connecting female contact units A and A' when stacking other female contact units A' shown in FIGS. 4 to 6 to form a plurality of rows of connectors.

Similarly, a contact portion support 4 and a terminal portion support 5 are also provided.
Projections 4c and 5b facing in the front-rear direction provided on both sides of the
is for fitting into the positioning groove of the outer shell member used when constructing the connector.

Figures 4 to 6 show a contact arrangement using the first female contact unit A shown in Figure 1 and the second female contact unit A' made in the same manner. This figure shows an example of a multi-core female connector 10 for card edges arranged in two rows, upper and lower, and arranged in a staggered manner with the upper and lower pitches shifted by half a pitch.

This multi-core female connector 10 has a resin-molded outer shell member 11 having a cylindrical shape, and an outer shape that can be fitted into one open end of the outer shell member 11, and also:
A resin-molded contact holding member 13 having a large number of contact holding through holes 12, a first female contact unit A and a second female contact unit A' according to the present invention, and an outer After the contact holding member 13 and both female contact units A and A' are assembled into the shell member 11, the other opening of the outer shell member 11 is filled with a synthetic resin material 14.

The outer shell member 11 is molded in advance from a conductive synthetic resin material with relatively low electrical resistance, and the outer shape of one end into which the contact holding member 13 is fitted is that of a female connector (not shown). It has a shape that can fit into the connecting tube.

Attachment pieces 11a for fixing to a printed circuit board or the like are protruded from the left and right outer sides of the outer shell member 11.

The contact holding member 13 is resin-molded in advance from an insulating synthetic resin material, and the contact holding member 13 is
The through-holes are arranged horizontally in two rows, upper and lower, and the hole positions in the upper and lower rows are shifted by half a pitch.
They are arranged in a staggered pattern.

The through hole 12 has a female contact guide hole 12 at the front end.
a, and its rear (inside side) is a female type contact 1
This is the insertion hole 12b.

Into each through hole 12 is inserted a female contact 1 protruding forward in both the first and second female contact units A, A'.

The insertion hole 12b of the female contact 1 has a cross-sectional shape that almost matches the cross-sectional shape of the female contact 1, and is particularly designed to the extent that the forked elastic piece of the contact portion of the female contact 1 does not lose its elastic action. In addition, the rear end insertion opening is slightly widened so as to hold the female contact 1 without loosening and to facilitate insertion of the female contact 1.

The operation of inserting the female contact 1 into the through hole 12 is performed before fitting the female contact holding member 13 into the outer shell member 11.

During this work, each female contact 1 is fixed to both female contact units A, A' at a pitch that matches the arrangement of the through holes 12, so the work efficiency is high, and the female contact Since the holding member 13 and both female contact units A, A' are fitted into the outer shell member 11 in a connected state, the assembly work is very easy, and the entire female connector can be assembled efficiently. It is being done.

After this assembly work, the rear spaces of both female contact units A and A' are filled with synthetic resin material 14.
The female connector 10 is completed.

When filling the synthetic resin material 14, each terminal support 5, 5' of both female contact units A, A' is
Since the groove 5a and the protrusion 5a' engage with each other to form the rear wall of the lower surface, there is no need for a mold for forming the outer shape, and the work can be done with a holding jig or the like.

(Effects) As described above, according to the present invention, a female contact can be easily manufactured by only punching a relatively thin plate material, so that it has good workability and can be processed with high precision. .

In addition, since multiple female contact pieces are connected to each other until midway through the manufacturing process, it is easy to handle the individual female contact pieces, which are thin and relatively fragile, and It is also easy to automate the installation.

Furthermore, since the contact portion of the female contact 1 is composed of a plurality of plate materials, there are a large number of contact points that come into contact with the female contact, and electrical reliability is also improved.

Since the female contact is composed of multiple plates made up of multiple female contact pieces, there are many contact points at the forked contact part that makes contact with the male contact, increasing electrical reliability. go up

Since the female contact consists of multiple female contact pieces,
A thin plate material can be used for the electrical material, punching is easy, and the female contact piece can be punched out into a small shape, so the female connector can be miniaturized.

It can also be punched into continuous strips using a roller die, making it highly workable.

Since a plurality of female contacts are connected and fixed to form a unit, the workability of assembling the female connector becomes high and miniaturization becomes easy.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a female contactor unit as an embodiment of the present invention, viewed from the front, and FIG.
FIG. 3 is a perspective view from the front of the first female contact piece connecting plate used in manufacturing the female contact unit shown in FIG. 1; FIGS. 4 to 6 are perspective views of the second female contact piece connection plate used in manufacturing the unit, viewed from the front; FIGS.
The figures show an embodiment in which a female connector is constructed using a female contactor unit according to the present invention. The figure is a plan view taken along the line ``--'' in FIG. 4, and FIG. 6 is a side view taken along the line ``--'' shown in FIG. 4. A, A'...Female contact unit, 1...Female contact, 2, 3...Female contact piece, 2A, 3A...
Female type contact piece connecting plate, 2a, 3a, 2a', 3a'...
Connection piece, 2c, 3c...Protrusion, 2b, 3b, 2
b', 3b'...notch, 3e...extension, 4...
Contact part support body, 5...Terminal part support body, 10...Multicore female connector, 11...Outer shell member, 12...Through hole, 13...Contact holding member, 14...Synthetic resin material.

Claims (1)

[Scope of Claims] 1. A tapered cut is made in the longitudinal direction at one end of a strip-shaped conductive material, and a plurality of female contact pieces serving as forked contact portions are aligned so that the tapered cuts are aligned. A plurality of female contacts are polymerized and the plurality of female contact pieces are connected via a separable conductive connecting piece, and a plurality of connected female contacts are made of synthetic resin. A female contact unit in a multicore connector characterized by being embedded and connected with a contact support. 2. A female contact unit in a multicore connector according to claim 1, which is formed by stacking a plurality of female contact pieces of the same shape to form a female contact. 3. According to claim 1 or 2, any one of the stacked female contact pieces is extended in the opposite direction to the contact part with the tapered cut, and the extended end is used as the connection terminal. A female contact unit in the described multicore connector. 4. A female contact unit in a multicore connector according to claim 3, wherein the extension portion of the female contact piece is connected and held by a synthetic resin member formed by embedded molding. 5. A step of punching out a female contact piece connecting plate in which the required number of elongated strip-shaped female contact pieces with tapered notches in the longitudinal direction are connected to each other via an appropriate number of conductive connecting pieces; A step of overlapping the female contact piece connecting plates using an alignment means so that the tapered notches are aligned, and positioning the female contact piece connecting plates of the plurality of overlapped female contact piece connecting plates in the appropriate positions except for the tapered notches and the connecting pieces. A process of embedding and molding the female contact piece connecting plates with synthetic resin so as to connect and hold them, and after this resin molding, separating the connecting pieces of the female contact pieces on each female type contact piece connecting plate. 1. A method for manufacturing a female contact unit in a multi-core connector, comprising the steps of: individually separating female contacts formed by polymerizing a plurality of female contact pieces. 6. The step of punching out the female contact piece connecting plate involves punching out the required number of female contact pieces from a strip material in which a large number of female contact pieces in the form of strips are connected in a strip shape through an appropriate number of connection pieces. 6. A method of manufacturing a female contact unit in a multi-core connector according to claim 5, further comprising the step of cutting out the female contact piece connection plate provided. 7. Either claim 5 or 6, wherein the step of punching out the female contact piece connecting plate includes processing of positioning means when overlapping a plurality of female contact pieces. A method for manufacturing a female contact unit in a multicore connector described in . 8. A patent claim characterized in that the punching process of any one of the plurality of overlapping female contact piece connecting plates includes processing of a connecting terminal part extending in the opposite direction of the contact part having a tapered cut. A method for manufacturing a female contact unit in a multicore connector according to any one of items 5 to 7. 9. The process of embedding a plurality of overlapping female contact piece connecting plates includes an embedding process of connecting any extension of the female contact piece connecting plates with a synthetic resin material. A method for manufacturing a female contact unit in a multicore connector according to any one of claims 5 to 8.