GB933576A - Snap-in contacts for electrical connectors - Google Patents

Abstract

933,576. Two-part couplings. CANNON ELECTRIC CO. Dec. 16, 1960 [Aug. 2, 1960,] No. 43334/60. Class 38 (1). In a multi-contact electrical two-part connector 10 comprising plug and socket members 14, 12, respectively, which have tubular metal shells 44, 16, containing insulating bodies 58, 26, carrying pin and socket contacts in bores 36, each contact is provided with an annular groove such as 78, Fig. 2, on its cylindrical body portion for receiving a resilient split metal retaining ring 80 which is compressed by a tapered portion 92 of bore 36 as the contact enters the body until it snaps behind an inclined shoulder 88 of the bore, contact entry being limited by a flange 86 on the contact engaging a shoulder 94 of the bore. Face 84 of the contact is angled such that it tends to cam ring 80 radially outwardly when the contact is pulled, while inclined shoulder 88 of the bore tends to cam the ring radially inwardly. The relative angle between face 84 and shoulder 88 determines the pull needed to remove the contact from the body, face 84 always having an angle of incline to the axis greater than the shoulder 88 (Fig. 5, not shown). The tapered bore and shoulder of the insulation body, which may be of resilient elastomer material, may be provided with a metal sleeve to reinforce the working surfaces (Fig. 6, not shown), or the insulation body may be in two parts, the bores of each part being aligned and of similar shape together to bore 36 (Fig. 7, not shown), an inwardly-directed flange forming an abutment to limit the inward movement of a socket to the contact. Specification 887,739 is referred to.