JP2890495B2 - High density electrical connectors - Google Patents

Description

The present invention relates to an electrical connector used for an electronic device,
In particular, it relates to a high-density electrical connector having a large number of built-in contacts.

[Conventional technology]

Conventionally, in this type of electrical connector, a contact is made of a metal spring material. That is, in the male / female mating connector, a contact having a spring structure that can obtain a contact force by applying a constant displacement to the female side is provided, and a rigid post pin for displacing the female contact to the male side. The post pin is fitted to the female contact to deform the spring, and the spring return force brings the female contact into contact with the post pin to make electrical connection.

[Problems to be solved by the invention]

The above-described conventional electrical connector has a configuration in which the female contacts are made of a metal spring material and are in contact with the male pins using the spring force in the thickness direction of the female contacts. In order to increase the density inside the housing, it is necessary to reduce the width of each contact. When manufacturing this type of contact, it is necessary to change the plate thickness corresponding to the width of the contact due to processing restrictions. Is required.

For this reason, the thickness of the spring material becomes thinner with the increase in the density of the connector, which causes a problem that the spring force of the contact is reduced and a stable connection cannot be obtained. In addition, there is a restriction on mounting with the reduction of the plate thickness, and therefore, it is necessary to use a spring material having a different shape, or it is necessary to bend the spring material in a complicated manner and perform insert molding.
There is also the problem of increased costs.

An object of the present invention is to provide a high-density electrical connector that solves the above-mentioned problems.

[Means for solving the problem]

The electrical connector according to the present invention includes a projecting portion in which an insulating material is formed in a plate shape, and a plurality of arms integrally formed with the projecting portion, the projecting portion projecting in a curved state at the rear end of the projecting portion,
A plurality of narrow conductive contacts formed at positions corresponding to the respective arms on the upper and lower surfaces of the projecting portion, and a conductive portion formed on the lower surface of the arm following the contact. Constitutes an electrical contact.

Then, the electric contacts are arranged in the connector housing at required intervals in the vertical direction, the respective conductive parts are connected to the circuit board, and the fork terminals provided on the fork terminal connector are arranged within the vertical intervals of the electric contacts. It is configured such that it can be fitted to make electrical contact with the contact portion.

[Action]

In this configuration, a plurality of narrow contact portions are arrayed and formed on the protruding portion, and a fork terminal is brought into contact with the contact portion to perform electrical connection, thereby realizing a high density of the contact portions.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

1 and 2 are a perspective view and a longitudinal sectional view of an embodiment of the present invention, and show only a contact.

The electric contact 1 is integrally formed of an insulating material such as a resin, and has a protruding portion 2 having a thin end at a tip thereof.
And a plurality of arms 3 extending rearward and downward. Narrow contact portions 4a and 4b are formed at upper and lower surfaces of the protruding portion 2 at positions on the extension of the arm portion 3 to make electrical contact with fork-shaped contacts described later. On the lower side surface of the arm portion 3, a conductive portion 5 connected to the lower contact portion 4b is formed. The contact portions 4a and 4b and the conductive portion 5 are formed by providing a metal conductive film by double molding, plating, or vapor deposition. In this case, it is preferable to provide a noble metal on the surface of the contact portions 4a and 4b in order to increase the contact reliability. The tip of the conductive portion 5 is configured as a solder connection portion 6 that is connected by soldering to a land 8 of a printed board 7 described later.

When the contact portions 4a and 4b and the conductive portion 5 are formed by chemical treatment, the width W can be extremely narrowed with high precision. Further, by integrally forming the protruding portion 2 and the arm portion 3, the accuracy can be increased.

FIGS. 3 and 4 are an embodiment of an electric connector constituted by using the electric contact 1 shown in FIGS. 1 and 2, and a longitudinal sectional view thereof. The electrical connector 10 is formed by stacking a plurality (three in this case) of the electrical contacts 1 with an insulator 12 interposed therebetween at the rear end of the protruding portion 2 and fixed to a housing 11 having a mounting portion 13 for mounting to the printed board 7. ing.

At this time, the vertical intervals between the electric contacts 1 are made equal. Further, it is preferable that the length and the projecting direction of the arm 3 be different between the upper and lower electric contacts 1 so that the distal end of the arm portion 3 of each electric contact 1 is located on substantially the same plane.

On the other hand, as shown in FIG. 3, the fork terminal connector 14 is fitted to the connector 10 and is electrically connected to each other. Fork terminal connector 14 is narrow and slit from the tip
The fork terminal 15 has a fork terminal 15 formed thereon. The fork terminal 15 is arranged in parallel at a position corresponding to the contact portions 4a and 4b of the electric contact 1, and is fixed and supported in a housing 16 using an insulating material. ing. Some of them are electrical connectors 10
Has an insertion hole 17 for guiding the electric contact 1 of FIG.

According to this configuration, the electric contact 1 of the electric connector 10 is fitted to the fork terminal connector 14 along the insertion hole 17 so that the fork terminal 15 is connected to the contact portions 4a, 4a of the electric contact 1.
b and the electrical connection is made.

In this case, in the electric contact 1, since the contact portions 4 a and 4 b having the narrow width W are formed in the integrally formed protrusion 2, the width can be reduced to the manufacturing limit of the contact portions 4 a and 4 b. . On the other hand, the fork terminal 15 is brought into contact with the contact portions 4a and 4b at its end surface in the plate thickness direction, and its spring force can be adjusted by the width w. Therefore, even when the plate thickness t is reduced, the contact portions 4a and 4b are stable. Electrical contact can be secured, and the dimension in the arrangement direction can be reduced. As a result, the electric connector 10 and the fork terminal connector 14 can be configured with high density.

〔The invention's effect〕

As described above, the present invention provides a plurality of narrow conductive contact portions corresponding to a plurality of arm portions which are protruded from the protruding portion made of an insulating material and are integrally formed with the protruding portion. The contact portion is formed so that the fork terminal provided on the fork terminal connector can be fitted into the contact portion so that the fork terminal can be in electrical contact with the contact portion. It is possible to realize a high-density contact portion without causing a problem such as the necessity of bending the spring material and performing insert molding with a reduction in the plate thickness, thereby enabling a high-density electrical connector to be configured. effective.

Further, in the present invention, since the arm portion is formed integrally with the projecting portion, the dimensional accuracy of the arm portion with respect to the projecting portion, that is, the dimensional accuracy of the electric contact with respect to the projecting portion, can be increased, and the housing of the electric contact can be provided. It is possible to increase the assembly accuracy in fixing the electrical connector and to configure a high-density electrical connector. Furthermore, even when the electric contacts are arranged in the connector housing at required intervals in the vertical direction, the electric contacts are electrically connected to the circuit board of the connector by connecting the conductive portions of each arm to the circuit board. It becomes possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway perspective view of an electric contact used in the electric connector of the present invention, FIG. 2 is a cross-sectional view of the electric contact shown in FIG.
FIG. 3 is a partially cutaway perspective view of an electric connector according to an embodiment of the present invention, and FIG. 4 is a sectional view of the electric connector in FIG. DESCRIPTION OF SYMBOLS 1 ... Electric contact, 2 ... Projection part, 3 ... Arm part, 4a, 4b ...
Contact section, 5: conductive section, 6: solder connection section, 7: printed board, 8: land, 10: connector, 11: housing, 12 ...
Insulator, 13 mounting part, 14 fork terminal connector, 15 fork terminal, 15a slit, 16 housing, 17 insertion hole.

Claims (1)

(57) [Claims] A projecting portion formed of an insulating material in a plate shape; a plurality of arm portions projecting in a curved state at a rear end portion of the projecting portion, and integrally formed with the projecting portion; A plurality of narrow conductive contacts formed at positions corresponding to the respective arms on the upper and lower surfaces, and a conductive portion formed on the lower surface of the arm following the conductive contacts. The electrical contacts are arranged in a connector housing at predetermined intervals in the vertical direction, the plurality of conductive parts are connected to a circuit board, and a fork is provided within the vertical interval of the electrical contacts. A high-density electrical connector characterized in that a fork terminal provided in a terminal connector is fitted so as to be able to make electrical contact with the conductive contact portion.