| 摘要 |
<p>This new electrical connector is for e.g. an engine (11) cylinder pressure sensor (10). It includes a hollow sleeve and angular bonnet (24). Its outer electrical contact ring comprises an annular insulator, lower elastomeric seal ring, combination seal and contact (36), conductor carrying a signal out, and a flanged metal guard ring (40). The combination seal and contact (36) include a non-conductive elastomeric annulus (42) and conductive elastomeric portion (44), co-moulded as a unitary annular part. The flanged upper end of the annulus is bonded to the flanged metal guard ring, and a thinner lower end. Around the lower end circumferential lip seals project radially inwardly, biasing against the bonnet above the outer electrical contact ring. The conductive elastomer is attached to the lower end by co-moulding simultaneously in a mould cavity. It includes conductive particles such that compression lowers resistance. Mechanical compression connects it electrically with the electrical contact ring, with sealing lips above and below.</p> |
