A connector includes: a casing (1), a plurality of pins (2), including: a first end portion (3), extending along a first axis (A1), a second end portion (4), extending along a second axis (A2), a securing portion (5), adjacent to the first end portion (3) and secured to the casing (1), an insertion part (6), arranged between the securing portion (5) and the second end portion (4), certain pins (2) including at the level of their insertion part (6) at least one wavy inflected part (7) including at least one axial part (11) extending along the first axis (A1) or the second axis (A2) and an off-axis part (12) extending radially distant from the axial part (11), the off-axis part (12) being connected to the axial part (11) through a curved shape.