Connector with reduced height

A connector, comprising:

• a terminal fitting fixed to a wire;
• and
• a connector housing configured by assembling an outer housing with an inner housing,
• the inner housing being formed with a plurality of terminal accommodation chambers each capable of accommodating the terminal fitting from a direction intersecting an arrangement direction of the terminal fitting and the wire,
• the terminal accommodation chambers each being formed with a retaining portion for restricting a displacement of the terminal fitting in each terminal accommodation chamber toward the wire, and
• the outer housing covering openings of the terminal accommodation chambers in an outer surface of the inner housing,
• wherein the inner housing includes a base plate portion and a separation wall portion projecting from the base plate portion and partitioning between adjacent ones of the terminal accommodation chambers,
• the outer housing includes a closing plate portion for closing the openings of the terminal accommodation chambers and a lock arm for holding the connector housing and a mating connector in a connected state,
• the lock arm is arranged to overlap an outer surface of the base plate portion and sandwich the inner housing between the closing plate portion and the lock arm, and
• a region not overlapping the lock arm, out of the base plate portion, is exposed on an outer surface of the connector housing.