HOUSING ASSEMBLY, PLUG CONNECTOR AND CONNECTION DEVICE

A housing assembly (1) for a plug connector (8) comprises a contact housing (2) and a securing element (4), wherein the contact housing (2) comprises at least one contact chamber (22) for receiving a contact unit (12) of the plug connector (8), a latching element (58) movable between a latching position (60) and a release position (62), which, in the latching position (60), protrudes at least sectionally into the at least one contact chamber (22), and a securing receptacle (3) leading at least sectionally into the at least one contact chamber (22), which is configured to receive the securing element (4) at least partly, wherein the securing element (4) comprises at least one chock section (56) and at least one lock section (52), wherein, when the securing element (4) is completely received in the securing receptacle (34), a movement of the at least one latching element (58) from the latching position (60) in a direction away from the at least one contact chamber (22) is blocked by the at least one chock section (56) and the at least one lock section (52) protrudes at least partly from the securing receptacle (34) into the at least one contact chamber (22). The securing element (4) allows for a twofold securing of one and the same contact unit. Further, the invention relates to a plug connector (2) as well as connection device (22).