Coaxial electrical connector and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-10158200-B2
Application number	US-201715821357-A
Country	US
Kind code	B2
Filing date	Nov 22, 2017
Priority date	Nov 28, 2016
Publication date	Dec 18, 2018
Grant date	Dec 18, 2018

Abstract

A coaxial electrical connector connected to a circuit board having a metal outer conductor having a tubular portion and a metal center conductor equipped with a contact portion extending in the axial direction of said tubular portion within the interior space of said tubular portion, and in which said center conductor is secured in place by the outer conductor, with a dielectric interposed therebetween, the center conductor has a radial portion with a plate-shaped configuration extending radially outward from the base portion side of the contact portion, and a connecting portion placed in contact with a circuit board is formed on the bottom face of said radial portion, wherein the radial portion has grain flow lines formed by a flow of metallographic structure oriented parallel to two major surfaces opposing each other in the axial direction, and the contact portion has grain flow lines oriented, in the axial direction.

First claim

The invention claimed is:

1. A coaxial electrical connector connected to a circuit board, comprising:
a metal outer conductor having a tubular portion, and
a metal center conductor comprising:
a contact portion extending in an axial direction of said tubular portion within an interior space of said tubular portion, and in which said center conductor is secured in place by the outer conductor, with a dielectric interposed therebetween,
a radial portion with a plate-shaped configuration extending radially outward from a base portion side of the contact portion, and
a connecting portion placed in contact with a circuit board formed on a bottom face of said radial portion,

wherein:
the radial portion comprises first grain flow lines formed by a flow of a metallographic structure oriented parallel to two opposing major surfaces of the radial portion that are opposed in the axial direction, and
the contact portion comprises second grain flow lines oriented substantially parallel in the axial direction, wherein the contact portion is a solid contact.

2. The coaxial electrical connector according to claim 1 , wherein the center conductor further comprises an annular portion located around the perimeter of the base portion of the contact portion, and said base portion and radial portion are coupled via said annular portion.

3. The coaxial electrical connector according to claim 2 , wherein the annular portion comprises a curved surface on which a slope of a tangent line lying within a cross-section containing an axis is continuous from the base portion of the contact portion to the radial portion.

4. A manufacturing method for the coaxial electrical connector of claim 1 , wherein a forging tool, comprising a pressing surface applying pressure in the through-thickness direction to a major surface substantially perpendicular to the through-thickness direction of sheet metal, and a contact portion-shaping hole recessed from said pressing surface so as to have an axis in a direction substantially perpendicular to said pressing surface, is used to apply pressure to the major surface of the sheet metal using the pressing surface of said forging tool, thereby reducing the thickness of said sheet metal and, at the same time, forcing the material of the reduced-thickness portion of the sheet metal into the contact portion-shaping hole to obtain the contact portion that extends in the axial direction.

5. The manufacturing method for a coaxial electrical connector according to claim 4 , wherein a transition section of the forging tool between the pressing surface and the contact portion-shaping hole has a tapered surface that extends away from the major surface of the sheet metal toward the contact portion-shaping hole.

6. The coaxial electrical connector of claim 1 , wherein the coaxial electrical conductor is formed from a workpiece comprising a coupling portion, a strip portion and an annular protruding portion disposed along a same plane, the strip portion having a thickness that is less than the annular protruding portion and the coupling portion, wherein the radial portion is formed from the strip portion.

Assignees

• Hirose Electric Co Ltd

Inventors

• Miyazaki Atsuhiro
• Tsuchida Masahiro

Classifications

• H01R24/38 Primary

  having concentrically or coaxially arranged contacts · CPC title

• H01R13/20 Primary

  Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together · CPC title

• H01R24/50

  mounted on a PCB [Printed Circuit Board] · CPC title

• H01R43/16

  for manufacturing contact members, e.g. by punching and by bending · CPC title

• H01R2103/00

  Two poles · CPC title