The present invention relates to a plug part for establishing an optical and/or electrical plug-in connection with a mating plug part by plugging together the plug part with the mating plug part in at least one plugging-together direction, the plug part having a plug part housing and at least one optical and/or electrical contact and an elastic opening prestressing element, acting in a direction parallel to the plugging-together direction, and an opening element for opening a flap on the mating plug part, the opening element being mounted displaceably in relation to the plug part housing in directions parallel to the plugging-together direction in or on the plug part housing, and being prestressed in one of these directions parallel to the plugging-together direction by the opening prestressing element.
Many configurations of plug parts for establishing optical and/or electrical plug-in connections are known. Not only optical and/or electrical signals but also power can be transmitted by way of the optical and/or electrical plug-in connections. In the case of more sensitive contacts, it is already known in the prior art to protect them from external influences in the unplugged state of the plug part and the mating plug part by a flap. As an example, reference is made here to EP 2 146 232 A1. In this document, both the plug part and the mating plug part each have a flap protecting the contacts, which is only opened during the plugging together of the plug part and the mating plug part.