Electrical plug-in connector with at least one insulation displacement contact element consisting of a sheet metal stamping, and corresponding mating connector

An electrical plug connector comprising at least one plug connector housing (1, 1′) and at least one insulation displacement contact element (2, 3, 4 and/or 2′, 3′, 4′, 4a′) that can be plugged into the plug connector housing (1, 1′) and comprises a sheet-metal stamping, which element has a planar contact arm baseplate (7), on which, on mutually opposite edges, a first contact plate (8, 8a) and a second contact plate (9, 9a) are integrally formed in one piece in a manner such that they are bent away in the same direction via a respective bending zone (5, 6),

• the contact plates (8, 9 and/or 8a, 9a) each having an insulation displacement contact device (21) for a conductor wire (148), and
• contact-making elements (19, 20 and/or 120, 121) for forming a contact-making device for making releasably pluggable contact with a mating plug contact element being provided on the insulation displacement contact element (2, 3, 4 and/or 2′, 3′, 4′, 4a′) the contact plates (8, 8a, 9, 9a) comprising contact spring arms in which the insulation displacement contact device (21) is arranged in the bending zone region, the contact spring arms having longitudinal edges (15, 16), said contact device being located so as to adjoin at least on one contact spring arm (8, 8a, 9, 9a), an element (19, 20 and/or 120, 121) of the contact-making device, the insulation displacement device (21) being keyhole-shaped, with a narrow insulation displacement contact slot (22) in the vicinity of the bending zone, the slot (22) running transversely centrally parallel to the longitudinal edges (15, 16) and opening into a plug-in hole (23) in a vicinity of the contact-making elements (19, 20 and/or 120, 121).