JPH02168581A - Electric connector - Google Patents

Abstract

PURPOSE: To make electric contact reliable by inserting and joining at least one of contact to a coated through hole of a circuit board and another is press- bonded to the surface of the circuit board by high pressure regarding an electric connector for printed circuit board comprising an insulating housing which houses a plurality of electric contacts. CONSTITUTION: The bottom part of a plastic housing 10 having an upper part aperture to receive conformed socket connectors is closed by a mold and pins 11-13 for contact are installed uprightly while piercing the bottom part. A printed circuit board 1 having a row of coated through holes 15 and parts 14 produced by expanding the holes 15 to make squeezing connection possible is installed in the lower part of the mold and, for example, a lower end of a pin 1 is pushed into the inside of the pin and other pins 11, 13 are bent at the lower ends and soldered with connection faces 18, 19 of tracks 20, 21 formed on the surface of the board 1. The bent parts are formed as to be end parts 16, 17 having elasticity by bending and bonded at high pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to electrical connectors, and more particularly to electrical connectors for surfaces mounted on printed circuit boards.

BACKGROUND OF THE INVENTION Electrical connectors having a plurality of electrical contacts for a surface mounted on a printed circuit board (PCB) are well known. The contacts may either be vapor phase soldered onto the PCB or penetrate the coating of the PCB as described in Burndy Corporation, US Pat. No. 2,853,382.

SUMMARY OF THE INVENTION The present invention attempts to provide an improvement over the prior art connectors described above.

Several rows of pins, e.g. 32 pins, electrically connected to printed circuit tracks on the board, e.g. by soldering, for provision on a printed circuit board by insertion of pins through rows of similarly arranged holes. It is also known to provide an electrical connector having three rows of .

Yet another device known for use with multilayer printed circuit boards for providing multiple rows of multiple pin connectors is to push them into each hole so that both hold the electrical connectors on the board. It uses a resilient pin to form an electrical connection to it.

In more complex circuits, with a large number of holes passing through the printed circuit board, the layout of the printed circuit becomes difficult as it must be avoided by printed circuit tracks.

SUMMARY OF THE INVENTION The present invention has been arrived at from consideration of this problem with multi-pin connectors, but simpler connectors using two or more pins are equally applicable.

Thus, in accordance with the present invention, a connector includes an insulating housing, a plurality of electrical contacts are provided within the housing, and at least one of the electrical contacts is configured to form a push-fit into a plated through-hole of a printed circuit board. and at least one of the other electrical contacts
An electrical connector for a printed circuit board is provided that is configured to form a high voltage bond to a surface of the printed circuit board.

A ductile metal material in the contact area such that at least one of the other electrical contacts configured to form a high voltage bond can establish a low resistance electrical connection with a contact area formed in a ductile metal material on a printed circuit board. Preferably, it includes a sharp edge region that penetrates and deforms. In this method, there is no need to remelt the solder for soldering the electrical connector to the printed circuit board. Therefore, the soldering step is eliminated and the connector can be installed after remelting the solder in the soldering step if other components on the circuit board are required.

Preferably, the surface of the printed circuit board is provided with one or more rows of electrical contacts configured to form a high voltage bond. Additionally, one or more rows of electrical contacts are typically provided that are configured to form push-fit connections into the plated through-holes of the printed circuit board. The preferred construction includes three rows of electrical contacts, two rows of electrical contacts that form high voltage connections with the surface of the printed circuit board, and one row of electrical contacts that form push connections into plated through-holes in the printed circuit board. Can be installed.

Conveniently, one row of electrical contacts forming a push-in connection is arranged between two rows of electrical contacts forming a high-voltage connection.

It will be appreciated that the push-in contacts serve to hold the electrical connector on the printed circuit board and maintain the necessary contact pressure for the high voltage contacts.

Furthermore, by using a large number of push-in contacts, the tendency of the printed circuit board to bend due to the forces generated by the high voltage contacts can be countered.

It is not necessary that the number of contacts in the rows of push-in contacts and high voltage contacts be equal.

For example, it can be seen that a small number of push-in contacts is sufficient to maintain contact pressure and prevent bending of the printed circuit board. For multilayer circuit boards, it is necessary that the number of rows of contacts be very large. One type of connector according to the invention includes five rows of electrical contacts;
The majority of the four rows are for high voltage contacts and the middle row is for push-in contacts. In another construction, a connector is provided having only one row of electrical contacts with push-in contacts located between the high voltage contacts.

EXAMPLE The bin connector of FIG. 1 includes a plastic housing IO having an upper opening for receiving a matching socket connector. The housing IO has three rows of contact pins 11, 12, 13 molded into and extending through the base of the housing. The pin 12 extends through the base of the housing and has an enlarged portion 14 near the end remote from the base to allow a fixed push-in connection with a row of plated through holes I5 in the printed circuit board I. . The pin 11.13 has a resilient end lB, 1 which is curved and extends outwardly beyond the side of the housing.
It has 7. The tip of the end is curved to have a convex contact surface 18,19 facing downwardly from the base. High voltage contacts of the tracks 20.21 on the surface of the printed circuit board and the contact surfaces 18 and I9 are made when the connector is fixed to the board by pushing and inserting the pins 12 into the plated through holes 15. . Electrical contact provided by high voltage contacts in normal environments will be excellent, and contact to the printed circuit board can be made after the other components are provided. However solder paste can be applied on the track,
Soldering can also be done by remelting if necessary.

FIG. 2 shows an alternative arrangement of the tips of pins 11 and 13 of FIG. Rather than giving a curved tip, a sharp edge is used. Pin 1 in plated through hole
2 is inserted, the sharp edges 24 are forced into the plated ductile metal on the track and deform to ensure a good electrically conductive bond.

FIG. 3 shows that the outer row has pins 31 similar to pins 11 and 13 of FIG. 1 but with sharp edge contacts as in FIG. 2, and the inner row has pins 12 of FIG. A four-row electrical bin connector is shown having push-in pins 32 with enlarged portions 34 similar to .

Although pins 12 and 32 are shown as having bulging enlarged portions 14.34, any configuration that allows them to be compressed or forced into a fixed contact, such as tapered or raised or Serated pins may be used. The end can have a cross-hole hole as well as a needle eye to increase the resiliency of the pin to facilitate compression or pushing into the plated through-hole.

The structure described above uses rows of pins of the same type, ie straight or curved, but the type is one
It should also be recognized that the above columns can be mixed. For example, in the structure of FIG. 1, one straight pin out of every five pins may be used, with the remaining pins being curved. Such a structure facilitates the layout of printed circuit tracks, resulting in a further reduction in the number of holes passing through the board, allowing fewer holes to be avoided by the tracks during their design stage.

A single or any number of rows of pins can be used, and in the simplest case two bin connectors can be constructed using the principles of the invention 14.

Although the connectors described above use bin contacts, it must be appreciated that similarly arranged socket contacts can be used or mixed bin and socket contacts can be provided. Such structures are considered to be within the scope of the present invention.

19... contact surface, 21...Truck.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a three-row bin connector constructed in accordance with the present invention. FIG. 2 is a detailed illustration of another sharp edge contact suitable for use in the structure of FIG. FIG. 3 is a cross-sectional view of a four-row connector constructed in accordance with the present invention.

Claims (8)

[Claims] (1) An electrical connector for a printed circuit board comprising an insulating housing and a plurality of electrical contacts disposed within the housing, wherein at least one of the electrical contacts is configured to form a push-fit into a plated through hole in the printed circuit board. 1. An electrical connector for a printed circuit board, wherein at least one of the other electrical contacts is configured to form a high voltage bond to a surface of the printed circuit board. (2) At least one of the other electrical contacts configured to form a high voltage connection has a curved end that provides a convex surface capable of forming an electrical connection to a contact area on a printed circuit board. 1. Electrical connector according to item 1. (3) at least one of the other electrical connectors configured to form a high voltage bond includes a sharp edge region capable of establishing a low resistance electrical connection with a contact area on a printed circuit board, the contact area being ductile; Made of metal material,
The electrical connector of claim 1, wherein the sharp edge region penetrates and deforms the ductile metal material of the contact region. 4. The electrical connector of claim 1, further comprising one or more rows of electrical contacts configured to form high voltage connections on the surface of the printed circuit board. 5. The electrical connector of claim 4, further comprising one or more rows of electrical contacts configured to form push-fit connections into plated through holes in the printed circuit board. (6) Three rows of electrical contacts are provided, two rows of electrical contacts configured to form a high voltage bond to the surface of the printed circuit board, and one row of electrical contacts into plated through-holes of the printed circuit board. 6. The electrical connector of claim 5, configured to form a push-fit connection. (7) one row of electrical contacts configured to form a push-in connection; two rows of electrical contacts configured to form a high voltage connection;
6. The electrical connector of claim 5, wherein the electrical connector is disposed between the rows of electrical contacts. (8) A contact array including contacts configured to form a high voltage connection with a surface of the printed circuit board and contacts configured to form a push connection into a plated through hole of the printed circuit board. Claim 4
Electrical connectors listed.