Housing assembly, connector and connection device

A connection device comprising:

• a connector including a housing assembly and at least one contact unit for contacting mating contacts of a mating connector, the housing assembly including a shield element and a contact housing, said contact housing including at least one contact chamber, said contact housing including at least one latching section which is movable between a latching position and a release position, said contact housing including at least one blocking section which is connected to said at least one latching section in a motion-transmitting manner, and said contact housing including a shield receptacle which is configured to receive at least in part said shield element, wherein said at least one blocking section projects at least in part into said shield receptacle when said at least one latching section is located in its release position, wherein said at least one contact unit is received in said at least one contact chamber of said contact housing and is in a latching connection with said at least one latching section, and wherein said shield element is received in said shield receptacle and secures said latching connection;
• and a mating connector that is configured to be complementary to said connector, wherein said connector and said mating connector are configured to be plugged together, and wherein said shield element of said connector in the plugged state projects at least sectionally into said mating connector.