Plug connector housing with locking mechanism and plug connector with locking mechanism using thereof

A plug connector housing with locking mechanism constituting, together with a plug-connector side contact, a plug connector with locking mechanism to be inserted into or withdrawn from a receptacle connector having, when a depth direction, a width direction and a thickness direction being perpendicular to each other are assumed, a cavity opening frontward in the depth direction, catching faces being provided at both ends in the width direction of the cavity and facing rearward in the depth direction, and a receptacle-connector side contact provided in the cavity, the plug connector housing with locking mechanism comprising

• a housing having a body, an inserting part being provided on the rear side in the depth direction of the body and being to be inserted into the cavity of the receptacle connector, a receiving part to receive the plug-connector side contact so that a contacting part thereof is exposed on the surface of the inserting part, the housing being at least partly insulative,
• flexible lock arms being arranged on both sides in the width direction of the housing, of which root ends being provided on the body of the housing, the lock arms extending rearward in the depth direction and up to the outer sides in the width direction of the inserting part and having protrusions, at the top ends thereof, extending outward in the width direction, and
• flexible control arms being arranged on both sides in the width direction of the housing, of which root ends being provided on the body of the housing on the rear side in the depth direction of the root ends of the lock arms, the control arms extending frontward in the depth direction, and the intermediate parts thereof being arranged to transmit forces working inwardly in the width direction to the intermediate parts of the lock arms, and
• being arranged in such a way that when the inserting part of the housing is inserted into the cavity of the receptacle connector, the protrusions of the lock arms will be caught on the catching faces of the receptacle connector, and when the top ends of the control arms are pressed inwardly in the width direction, the protrusions of the lock arms will be displaced inwardly in the width direction to be released from the catching faces of the receptacle connector.