Connector having a housing with a fitting tube with guide walls with a lock arm inbettween

A connector, comprising:

• a second housing including a lock portion;
• a first housing connectable to the second housing;
• and
• a slider assembled with the first housing movably between an initial position and a connection position and configured to be moved from the initial position to the connection position as the first and second housings are properly connected;
• wherein:
• the first housing includes a housing main body configured such that the second housing is externally fittable thereon, a fitting tube spaced out from the housing main body and partly surrounding the second housing when the second housing is fit externally on the housing main body, the fitting tube including opposed spaced apart guide walls, and a lock arm connected to the housing main body and exposed outward of the first housing at a position between the guide walls, the lock arm being configured to form a deflection space between the lock arm and the housing main body and to hold the first and second housings in a connected state by resiliently locking the lock portion;
• the lock arm includes a connection position holding receiving portion on a surface of the lock arm facing away from the housing main body;
• the housing main body includes an initial position holding receiving portion on a surface facing the lock arm;
• the slider includes a base portion extending along a width direction and to be inserted into the deflection space, two arms projecting from opposite widthwise end parts of the base portion and a coupling that couples projecting end parts of the arms and facing the surface of the lock arm facing away from the housing main body;
• an initial position holding portion on the base portion of the slider and configured to regulate a movement of the slider to the connection position by resiliently locking the initial position holding receiving portion at the initial position;
• and
• a connection position holding portion on the coupling of the slider and configured to contact the connection position holding receiving portion on the surface of the lock arm facing away from the housing to regulate detachment of the slider at the connection position.