IC socket
AssigneeYamaichi Electronics Co., Ltd.
InventorKazumi Uratsuji
Life of this patent
Estimating the term…
Abstract
An IC socket is equipped with a plurality of elastic contact pins which are brought into contact with spherical bumps of an IC package. Each of the contact pins has at a foremost end thereof a contacting portion disposed opposite to a lower spherical surface of the spherical bump. The contacting portion has a relief portion which is kept in a non-contacting condition relative to a lower dead point portion on the lower spherical surface of the spherical bump, and a contacting end is brought into press contact at an area thereof around the relief portion with that area of the spherical surface of the spherical bump outwardly adjacent to the lower dead point.
Claims19
An IC contact assembly including
- a plurality of electrically conductive elastic contact pins, each of said elastic contact pins comprising:
- a base end;
- an elongated spring portion extending from said base end;
- and
- a planar contacting portion extending from said elongated spring portion, said planar contacting portion having opposite planar faces, laterally opposite side edges and a distal end edge spanning between said laterally opposite side edges;
- wherein said contacting portion is generally U-shaped and includes first and second spaced apart and mutually integral coplanar contacting free ends at said laterally opposite side edges, respectively, an entirety of said distal end edge between said first and second contacting free ends constituting a recessed portion formed between said first and second contacting free ends, such that said contacting portion constitutes a means for contacting a spherical electrical lead in such a manner that said first and second contacting free ends come into point contact with the spherical electrical lead at positions equidistantly spaced apart from and on opposing sides of a lower dead point of the spherical electrical lead, and said recessed portion is spaced below the lower dead point of the spherical electrical lead so as to constitute a non-contacting portion.
An IC contact assembly including
- a plurality of electrically conductive elastic contact pins, each of said elastic contact pins comprising:
- a base end;
- an elongated spring portion extending from said base end;
- and
- a contacting portion extending from said elongated spring portion;
- wherein said contacting portion includes a cylindrical wall with an annular end surface for contacting a spherical electrical lead along an annular line, said cylindrical wall constituting a radially outermost portion of said contacting portion, and an entirety of an area located inwardly of said cylindrical wall constituting a recessed portion recessed relative to said cylindrical wall so as to be spaced below a lower dead point of the spherical electrical lead when said annular end surface of said cylindrical wall is in contact with the spherical electrical lead.
Dependencies are inferred from the claim text.