Patent ID: 6875047

Claim:
A connector comprising: a terminal metal fitting including a supporting portion and an elastic contact portion located apart therefrom within a cavity, a complementary conductor being located on the surface of said supporting portion, the complementary conductor being sandwiched between said supporting portion and said elastic contact portion under an elastic restoring force urging said complementary conductor toward said supporting portion; and a connector housing which houses said terminal metal fitting and is coupled with a complementary insulator supporting said complementary conductor, wherein a gap is formed between said elastic contact portion and inner face of said cavity, and assuming that the gap is A, a temperature change acting on said complementary conductor and insulator and said elastic contact portion is ΔT, a linear expansion coefficient of a union consisting of said complementary conductor and complementary insulator is βa, a distance between a first fixing portion where said complementary conductor is fixed and a contact between said complementary conductor and said elastic contact portion is 1 a , a linear expansion coefficient of a union consisting of said connector housing and said terminal metal fitting is βb, and a distance between a second fixing portion where the said terminal metal fitting is fixed and said contact is 1 b, A≧=ΔT×βa ×1 a−ΔT×βb ×1 b, and assuming that the elastic coefficient of said elastic contact is k, the static friction between said complementary conductor and said elastic contact portion is μ and the elastic restoring force of said elastic contact portion is F, Δ T×βa ×1 a−ΔT×βb ×1 b ≦2×(μ× F/k ).