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Cam Actuated, Force Free Connector with Contact Springs

IP.com Disclosure Number: IPCOM000081486D
Original Publication Date: 1974-Jun-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Branson, CA: AUTHOR [+3]

Abstract

Contact springs in this connector provide a combined wiping and biting action against the sides of engaging terminal pins. The surface of the terminal pin is coated with a soft alloy which is permanently deformed by the springs, to establish a gastight electrical connection. The connector housing may be fabricated from low-cost plastic materials. Inexpensive materials may be employed as contacts, because of the wiping and biting action of the design.

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Cam Actuated, Force Free Connector with Contact Springs

Contact springs in this connector provide a combined wiping and biting action against the sides of engaging terminal pins.

The surface of the terminal pin is coated with a soft alloy which is permanently deformed by the springs, to establish a gastight electrical connection. The connector housing may be fabricated from low-cost plastic materials. Inexpensive materials may be employed as contacts, because of the wiping and biting action of the design.

Fig. 1 shows a module 10 having a plurality of terminal pins 11, e.g., fifty or more supported by a connector 12 including a movable block 14 and a fixed block 16, the latter being attached to a printed-circuit board 18 through contact springs 22 (see Fig. 2). A cam member 20 is adapted to shift the movable member 14 relative to the fixed member 16.

Fig. 2 shows one contact opening of the connector 12 shown in Fig. 1. A contact spring or element 22 is held in the opening by a solder pad 24 formed in an aperture in the card 18. In one condition of the camming member 20 (shown by the solid lines associated with the elements 11, 14 and 22), the terminal pin 11 enters the opening of the connector without engaging the element 22 or in a zero-force mode. In the second position of the camming member 20 (shown by the dotted lines associated with the elements 11, 14 and 22), the member 14 and the spring 22 engage the terminal 11 to cause end contact 26 to bite into the t...