JPH02270277A - Electric connector - Google Patents

Abstract

PURPOSE: To facilitate insertion of a board by equipping an insulated vessel with a plurality of electric contacts, furnishing a pin for pressure fitting in a hole formed in a printed circuit board, and providing the conducting surface of the print circuit board with an electric connection part to form high pressure connection. CONSTITUTION: On a printed circuit board 2 a vessel 1 made of insulative material is furnished so that a contacted condition is generated by at least one pin 3 to be pressure fitted in a hole 4 in a board. The connector further includes a plurality of electric contacts 7 furnished in the vessel 1, pin 3 at least one so as to generate pressure fit connection to the hole in the circuit board 2, and at least one electric connection part to generate pressure connection on the conducting surface of the circuit board 2. Thereby the resilience of the whole contact is increased, and insertion of the board having a high contact density is facilitated.

Description

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

BACKGROUND OF THE INVENTION Electrical connectors having a plurality of electrical contacts for surfaces on printed circuit boards are known.

SUMMARY OF THE INVENTION The contacts may be vapor phase soldered onto the board or may penetrate the coating of the board as in US Pat. No. 2,853,382.

The present invention seeks to provide improvements to the known connectors mentioned above.

SUMMARY OF THE INVENTION In accordance with the present invention, an insulating container, a plurality of electrical contacts provided in the container, and at least one configured to form a press fit connecting to a hole in a printed circuit board.
An electrical connector for a printed circuit board is provided that includes at least one electrical connection portion configured to form a high pressure connection to a conductive surface of the printed circuit board.

[Embodiment] The connector shown in FIGS. 1 and 2 is provided on a printed circuit board 2 and held in contact by at least one pin 3 which is press-fitted into a hole 4 in the board. It includes a container l of insulating material constructed as follows. In the structure shown, it is assumed that there are two pins 8 at opposite ends of the container, which are substantially press-fit into respective holes 4 in the board 2. Since the only function of the pin 3 is to hold the container l to the board 2, the hole 3 can be an ordinary hole through the insulating part of the board, i.e. it does not need to be a plated through hole. It is noted that it does not need to be formed by a conductive material.

The conductive tails B of the individual electrical contacts 7, which are housed in separated recesses 8 on either side of the central groove 9 in the upper part of the container l, are provided in downwardly directed gaps 5 in the container l. 9 serves to receive an insert (which may be part of a separate printed circuit board) provided with conductor tracks or other contact surfaces adapted to match the individual contacts 7 . The latter is designed to exert a lateral force on the insert in order to keep it in the container l and to ensure a low resistance connection between the contact 7 and the conductive track or surface of the insert. curved as shown.

The tail 6 of the contact 7 ends in a sharp edge region 10 configured to penetrate and deform a connection region 11 on the board 2, made of a ductile metallic material. In this way a low resistance electrical connection is established between the tails 6 (and their associated contacts 7) and the connection area 11.

In another construction (not shown) the tail 6 is connected to the connection area 1
It can also end with a curved end that is elastically pressed into contact with the 1.

As shown in FIG. 1, the pins 3 are integrally formed with a metal strip, tab 12, to keep them securely within the container 1. Other methods of securing the pin within the container can of course also be used.

The number of pins 3 used to fasten the container tSt to the board 2 depends on factors such as the length of the container and the elasticity of the tail 6. In this latter connection, it may be necessary to use multiple pins to counteract the tendency of the board to bow due to high compressive forces on the tails of the contacts.

The embodiment shown in FIG. 3 differs from that shown in FIGS. 1 and 2 only in the form of the contacts in the container l. According to this embodiment, the contact has a straight section 13 embedded at its lower end in the base of the container l and a short curved section 14 continuous with the upper end of the straight section 13. The elastic deformation of the contact when the board is inserted is
Near the upper end of section 18 section 14 bends, allowing section 13 to bend at its lower end embedded in the container.

This greatly increases the overall elasticity of the contacts and facilitates the insertion of boards with high contact densities.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a connector according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the connector of FIG. 1. FIG. 3 shows a sectional view of a different embodiment from a direction similar to that of FIG. l... Container, 2... Printed circuit board, 3... Pin, 4... Hole, 6... Conductive tail, 7... Electrical contact, 9... Groove, 10... sharp edge area,
11... Connection area, 13... Straight line portion, 14...
curved part. Applicant's agent Patent attorney Takehiko Suzue

Claims (7)

[Claims] (1) an insulating container, a plurality of electrical contacts provided in the container, at least one pin configured to form a pressure-fit connection in a hole in a printed circuit board, and a pressure fit in a conductive surface of the printed circuit board; and at least one electrical connection portion configured to form a connection. (2) the electrical connection part for a form of pressure connection can establish a low resistance electrical connection to a connection area on a printed circuit board formed of a ductile metal material, and the ductile metal of the connection area The electrical connector of claim 1 including a sharp edge region configured to penetrate and deform the material. 3. The electrical connector of claim 1, further comprising at least one row of electrical contacts having portions configured to form high pressure connections to respective conductive surfaces of the printed circuit board. 4. The electrical connector of claim 3, further comprising two rows of electrical contacts each having a portion configured to form a high pressure connection to a respective conductive surface of the printed circuit board. (5) A claim in which two or more pins configured to form press-fit connections to individual holes in a printed circuit board are disposed between two rows of electrical contacts configured to form high-pressure connections. The electrical connector according to item 4. (6) Two rows of resilient electrical contacts are also provided on either side of the container groove for receiving and retaining an insert having a conductive surface that matches the contacts.
or the electrical connector described in 5. (7) The electrical contacts in the container are connected to the container at one end so that upon insertion of the printed circuit board into the container the curved portion is bendable with respect to the straight portion and the latter is bendable with respect to the container. 7. An electrical connector according to claim 1, comprising a straight portion to be joined and a curved portion joined to the other end of the straight portion.