Connector for spacers of an insulating glass unit and spacer assembly for an insulating glass unit with connectors and tool for a connector

Connector for spacers for insulating glass units which spacers (1) extending in a longitudinal direction (z) with a constant cross-section in a sectional plane (xy) perpendicular to the longitudinal direction (z) such that the spacer (1) enclosing an interior cavity (1h) and at least at the enclosing the internal cavity (1h) is formed inside of plastics, with a first connector portion (A1) adapted for insertion in the longitudinal direction (z) in the interior cavity (1h) to an open end of the spacer (1) is adapted, and a second connector portion (A2) for insertion in the longitudinal direction (z) in the interior cavity (1h) at another open end of the spacer (1) is adapted wherein said first connector portion (A1) and the second connector portion (A2) along a central axis (R) are arranged in the longitudinal direction (z) one behind the other and the first connector portion (A1) is adapted for a sliding by contact of the inner cavity (1h be) enclosing inside of the spacer (1) in the same held, and ...