Electroconductive contact unit system
AssigneeNHK Spring Co., Ltd.
InventorToshio Kazama
Life of this patent
Estimating the term…
Abstract
In an electroconductive contact unit, a base end of a compression coil spring which may be either a contact member itself or a spring member for urging a needle-shaped contact member is received in a support recess formed in a base board. An end of the internal conductor of the base board is exposed on the bottom end of the support recess, and is electrically connected to the base end of the compression coil spring. There is no need for any electric connector, and the electric resistance between the internal conductor of the base board and the contact member can be minimized. To ensure a favorable electric connection, a base end of the compression coil spring may be soldered to the exposed end of the internal conductor which may be either flat or recessed.
Claims18
An electroconductive contact unit, comprising:
- a base board having a surface and an internal conductor;
- a support recess formed on said surface and exposing an end of said internal conductor to an interior of said recess;
- and
- an electroconductive coil spring received in said support recess and having an inner end which is in electric contact with said exposed end of said internal conductor, and having an outer end which axially moveably projects out of said support recess, and is adapted to contact an object to be accessed.
An electroconductive contact unit, comprising:
- a base board having a surface and an internal conductor having an end exposed at said surface;
- an insulating plate which is placed over said surface of said base board;
- a support hole formed in said insulating plate so as to expose said exposed end of said insulator to an interior of said hole;
- and
- a contact assembly received in said support hole and having an inner end which is in electric contact with said exposed end of said internal conductor, and having an outer end which axially movably projects out of said support hole, and is adapted to contact an object to be accessed, said contact assembly comprising a needle-shaped member slidably received in said support hole, and an electroconductive compression coil spring interposed between said exposed end of said internal conductor and an annular shoulder defined in said needle-shaped member.
Dependencies are inferred from the claim text.