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US 11,674,193 B2Granted
Canted coil spring and connector
AssigneeSumitomo Electric Industries, Ltd.
InventorsTakumi Akada, Hiromu Izumida
Life of this patent
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Abstract
A canted coil spring includes a core wire 10 formed of steel having a pearlite structure; and a copper plating layer 20 formed of copper or a copper alloy and covering an outer circumferential surface 11 of the core wire 10. The steel contains 0.5 mass % or more and 1.0 mass % or less carbon, 0.1 mass % or more and 2.5 mass % or less silicon, and 0.3 mass % or more and 0.9 mass % or less manganese, with the balance being iron and inevitable impurities. The copper plating layer 20 has a crystallite size of 220±50 Å.
Claims17
A canted coil spring comprising:
- a core wire formed of steel having a pearlite structure;
- and
- a copper plating layer formed of a copper alloy covering an outer circumferential surface of the core wire;
- wherein the steel contains 0.5 mass % or more and 1.0 mass % or less carbon, 0.1 mass % or more and 2.5 mass % or less silicon, and 0.3 mass % or more and 0.9 mass % or less manganese, with the balance being iron and inevitable impurities,
- the copper plating layer has a crystallite size of 220±50 Å,
- the copper plating layer has a lattice strain of −0.085±0.015%, and
- an oxygen concentration in an interface between the core wire and the copper plating layer is 10 mass % or less.
4 more elements
Dependencies are inferred from the claim text.