Plug connector housing with locking mechanism and plug connector having such housing

A plug connector casing for a plug connector adapted to be inserted into or withdrawn from a receptacle connector, wherein, with reference to a depth direction, a width direction and a thickness direction being perpendicular to each other, the receptacle connector has a cavity opening frontward in the depth direction, catching faces provided at two opposite ends in the width direction of the cavity and facing rearward in the depth direction, and a receptacle contact provided in the cavity,

• wherein the plug connector casing comprises:
• a housing having a body, an inserting part provided on a rear side in the depth direction of the body and being adapted to be inserted into the cavity of the receptacle connector, a receiving part adapted to receive a plug contact so that a contacting part thereof is exposed on a surface of the inserting part, wherein at least a part of the housing is insulative,
• flexible lock arms arranged on two opposite sides in the width direction of the housing, wherein the lock arms have root ends thereof provided on the body of the housing, the lock arms extend rearward in the depth direction and toward outer sides in the width direction of the inserting part, and the lock arms have protrusions extending outward in the width direction at top ends of the lock arms, and
• flexible control arms arranged on the two opposite sides in the width direction of the housing, wherein the control arms have root ends thereof provided on the body of the housing at locations rearward in the depth direction relative to the root ends of the lock arms, the control arms extend frontward in the depth direction from the root ends of the control arms via intermediate parts thereof to top ends thereof, and the intermediate parts of the control arms are arranged to transmit forces working inwardly in the width direction onto the intermediate parts of the lock arms, and
• wherein the plug connector casing is configured, arranged and adapted in such a way that the inserting part of the housing is adapted to be inserted into the cavity of the receptacle connector such that the protrusions of the lock arms will be caught on the catching faces of the receptacle connector, and the top ends of the control arms are adapted to be pressed inwardly in the width direction such that the intermediate parts of the control arms transmit the forces working inwardly in the width direction onto the intermediate parts of the lock arms so that the protrusions of the locks arms will be displaced inwardly in the width direction to be released from the catching faces of the receptacle connector.