US 5,692,294 A · Tools for crimping an electrical contact onto a conductor

Abstract

Crimping tooling is disclosed for providing a precision crimped termination (182, 186). The tooling includes a crimping die (92) and mating crimping anvil (136) that will operate in a hand operated tool (50), a power assist hand tool, an applicator in a press, or other machine. The crimping die (92) and crimping anvil (136) each have two spaced barrel engaging portions (116, 118, 164, 166) that form four radially arranged precision indents in the barrel of a plated contact terminal (66) for terminating the contact terminal to an electrical conductor (68). Each of the four barrel engaging portions (116, 118, 164, 166) has an arcuate convex shape without any flat surfaces or sharp corners or edges that could interfere with smooth deformation of the barrel without over stressing the plating during crimping. The end (156) of the anvil terminates at each side wall (158, 160) in somewhat sharp edges (168, 170), respectively, that curve outwardly to help prevent the formation of a burr on the crimped connection. The side walls (120, 122) of the opening (110) in the crimping die (92) are tapered at an angle to the axis (102) of the die that is less than three degrees to further protect against the formation of a burr.

Claims20

Dependent claims

A crimping apparatus for crimping a contact terminal having a wire receiving barrel to an electrical conductor within said barrel to produce a precision electrical termination, comprising;

(a) a crimping die having a first pair of barrel engaging portions spaced a fixed distance apart, said crimping die includes an opening having a floor and first and second opposed walls on opposite sides of said axis extending from said floor, each wall diverging away from said axis at a first angle of less than three degrees,
(b) a crimping anvil having a second pair of barrel engaging portions spaced a fixed distance apart, each of which is opposed to and in alignment with a respective one of said barrel engaging portions of said first pair,
one of said crimping die and said crimping anvil arranged to move in a first direction along an axis toward the other and into mated engagement therewith so that when a contact terminal is disposed between said crimping die and said crimping anvil said first and second pairs of barrel engaging portions engage said barrel of said contact terminal at four angularly spaced locations forming four indents thereby effecting electrical termination,
wherein each said barrel engaging portion includes only a smooth convex surface for effecting said crimping engagement with said barrel.

1 more element

A crimping apparatus for crimping a contact terminal having a wire receiving barrel to an electrical conductor within said barrel to produce an electrical termination, comprising;

(a) a crimping die having a first pair of barrel engaging portions spaced a fixed distance apart, wherein said crimping die includes an opening having a floor and first and second opposed walls on opposite sides of said axis extending from said floor, wherein said convex surfaces of said first pair of barrel engaging portions are on said floor on opposite sides of said axis;
(b) a crimping anvil having a second pair of barrel engaging portions spaced a fixed distance apart, each of which is opposed to and in alignment with a respective one of said barrel engaging portions of said first pair, wherein said crimping anvil includes an end having third and fourth opposite walls, said end sized to be closely received within said opening when said crimping anvil is in said mated engagement with said crimping die, wherein said end includes first and second projections extending from opposite sides of said end adjacent said third and fourth walls, respectively, toward said floor when said crimping anvil is in said mated engagement with said crimping die, said projections arranged to direct flow of said barrel away from said walls during said crimping engagement, thereby preventing the formation of a burr,
one of said crimping die and said crimping anvil arranged to move in a first direction along an axis toward the other and into mated engagement therewith so that when a contact terminal is disposed between said crimping die and said crimping anvil said first and second pairs of barrel engaging portions engage said barrel of said contact terminal at four angularly spaced locations forming four indents thereby effecting said electrical termination.

A crimping apparatus for crimping a contact terminal having a wire receiving barrel to an electrical conductor within said barrel to produce a precision electrical termination, comprising;

(a) a crimping die having a first pair of barrel engaging portions spaced a fixed distance apart, said crimping die includes an opening having a floor and first and second opposed walls on opposite sides of said axis extending from said floor, each wall diverging away from said axis at a first angle of less than three degrees,
(b) a crimping anvil having a second pair of barrel engaging portions spaced a fixed distance apart, each of which is opposed to and in alignment with a respective one of said barrel engaging portions of said first pair,
one of said crimping die and said crimping anvil arranged to move in a first direction along an axis toward the other and into mated engagement therewith so that when a contact terminal is disposed between said crimping die and said crimping anvil said first and second pairs of barrel engaging portions engage said barrel of said contact terminal at four angularly spaced locations forming four indents thereby effecting electrical termination.

Dependencies are inferred from the claim text.

Tools for crimping an electrical contact onto a conductor

Life of this patent

Tools for crimping an electrical contact onto a conductor

Life of this patent

Abstract

Claims20