Socket for turn-and-lock multipin electrical device

In combination with an electrical device having a base from which extend two parallel connector pins each having a small-diameter cylindrical shank and a large-diameter cylindrical head, a socket comprising:

• a cup-shaped housing centered on an axis and formed with a transverse wall having front and back faces extending perpendicular to the axis, the wall having between the faces a predetermined thickness substantially less than a distance between an end face of the device and the heads, the wall being formed with a pair of arcuate throughgoing slots symmetrically flanking the axis and each having a wide end through which a respective one of the heads can pass and an opposite narrow end, whereby the device can be fitted to the housing by passing the heads of the pins through the wide ends until the device end face engages the wall front face followed by turning of the device about the axis to displace the heads toward the narrow ends of the respective slots;
• a respective ramp at each of slots at the respective narrow end, engageable with an underside of the respective head, and angled such that, on angular movement of the respective pin toward the respective narrow end, the respective head is cammed axially backward away from the wall back face and the device end face is pressed against the wall front face;
• respective electrical contacts on the housing at the slots engageable with the heads of the respective pins when same are at the narrow slot ends;
• and
• spring means urging each of the contacts radially across the respective slot.