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Method of manufacturing contact spring sockets

  • US 4,614,029 A
  • Filed: 04/01/1985
  • Issued: 09/30/1986
  • Est. Priority Date: 04/05/1984
  • Status: Expired due to Fees
First Claim
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1. Method of manufacturing contact spring sockets with a plurality of radially inward bowed contact springs clamped at one end in an approximately cylindrical socket body, formed by a thin-walled deformable sleeve, wherein straight contact springs, formed by sections of a contact spring wire, are introduced into the socket body from one socket end, wherein the fastening in the socket body of the contact springs at their front ends in an aligned state relative to each other, to a central annular head at the front end of a line connector projecting into the socket body is achieved by means of deformation of the socket material, and wherein the free ends of the contact springs are brought into supporting abutment on an annulus at the pin insertion end, which is associated with an assembly mandrel passing through it, which is co-axially introduced into the socket body during manufacture, and finally withdrawn from it, characterized by the following method steps:

  • (a) introduction into the middle region of the socket body (1) of an insert ring fitting adjacent the interior wall of the socket and projecting with its end edges into the socket interior(b) introduction into the socket body of the contact springs, whereby they lie adjacent the insert ring and with their front edges they extend into the co-axial annular gap between the interior wall of the socket and the central head of the line connector which projects into the interior of the socket,(c) introduction into the socket body of the mandrel, which is conically shaped and whose diameter increases towards its front end, together with the annulus mounted on it,(d) withdrawal of the mandrel from the socket body with radial expansion of the annulus which is secured against axial displacement while carrying with it the outer ends of the contact springs until abutment on the interior wall of the socket and(e) deformation of the central head while carrying with it the inner ends of the contact springs, as well as(f) optionally forming a flange by folding over the outer edge of the contact socket, to secure the annulus.

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