Connector

A connector comprising:

• a first connector housing to be allowed to pass through a hole of a panel;
• a locking arm formed on the first connector housing, the locking arm being resiliently deformed to be locked to an inner edge of the hole when the first connector housing is allowed to pass through the hole;
• a second connector housing to be fit to the first connector housing;
• and
• a displacement preventing means for preventing the locking arm from being displaced in a direction crossing a direction in which the locking arm is resiliently deformed,
• wherein the locking of the locking arm to the hole is removed when the second connector housing is fit to the first connector housing locked in the hole, the first connector housing is prevented from moving relatively with respect to the panel until the first and second connector housings are fit to each other, and the first connector housing moves relatively with respect to the panel when the first and second connector housings are fit to each other, so that the second connector housing is locked in the hole.