US Patent 7611370 Connector

A connector including a first connector housing; a second connector housing to be engaged with the first connector housing; a locking arm and pair of ribs for maintaining the engagement of the first and second connector housings. The locking arm includes: an arm part extending vertically from an upper wall of the first connector housing and extending in the engaging direction; and a pair of locking parts projecting toward sides of the arm part 91 in an extending direction from a tip of the arm part. The pair of ribs are extending vertically from a second hood, positioned nearer sides of the arm part than the pair of locking parts, and abuts on the pair of locking parts when the first and second connector housings are engaged with each other.