GB1331122A - Electrical coupling elements - Google Patents

Abstract

1331122 Two-part couplings CUTLERHAMMER INTERNATIONAL FINANCE Inc 3 June 1971 [3 June 1970] 18813/71 Heading H2E A socket member 6 comprises a bore 6b extending from one end adapted to receive a terminal pin 20 with a shoulder 20a and a resiliently biased catch means entering the bore through an aperture 6e in the socket member, the pin, on insertion, engaging a cam surface 6g until a catch surface 6h on the catch means engages behind the shoulder to lock the pin in the bore. The catch means comprises a pawl 6f with converging edges which seat upon complementary edges of the aperture under the action of a split sleeve spring 6j, a tongue 6k of which fits in a slot 6l of the socket. An arcuate surface 6i of the pawl makes contact with the pin shoulder 20a. The pin is withdrawn with the aid of a split nylon sleeve (not shown) inserted around the pin and bearing against the shoulder 20a to urge the pawl outwards until the catch surface 6h clears the shoulder 20a which slides over a further cam surface 20m as the pin is withdrawn. The pawl and spring can be made from one piece, a tab being bent inwardly from the spring sleeve to provide surfaces equivalent to 6g, 6h and 6m. The member 6 which has a contact 6a forming part of a switch (not shown) and ribs 6d is moulded into a silicone rubber seal (16) in an insulating cover (18), the seal (16) being formed with ridged (16b) holes (16a) which stretch around the terminal pin and wire (Fig. 1, not shown). The terminal pin is crimped to a wire 22.